ClipArt ETC
Silhouette outlines of people (silhouettes of men) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

People Silhouette Tangram Card #6

Silhouette outlines of people (silhouettes of men) made from tangram pieces. Tangrams, invented by the…

Silhouette outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

Sea Animals Silhouette Tangram Card

Silhouette outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces.…

Silhouette outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow, rhombus, hexagon) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

Shapes Silhouette Tangram Card

Silhouette outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow, rhombus,…

Illustration of a regular nonagon inscribed in an equilateral triangle. This could also be described as an equilateral triangle circumscribed about a regular nonagon.

Nonagon Inscribed in a Triangle

Illustration of a regular nonagon inscribed in an equilateral triangle. This could also be described…

Illustration of an equilateral triangle inscribed in a regular nonagon. This could also be described as a a regular nonagon circumscribed about an equilateral triangle.

Triangle Inscribed in a Nonagon

Illustration of an equilateral triangle inscribed in a regular nonagon. This could also be described…

Diagram showing a spherical triangle.

Spherical Triangle

Diagram showing a spherical triangle.

Diagram showing a spherical triangle constructed by the intersection of polar arcs.

Spherical Triangle

Diagram showing a spherical triangle constructed by the intersection of polar arcs.

Diagram showing a spherical triangle constructed by the intersection of polar arcs.

Spherical Triangle

Diagram showing a spherical triangle constructed by the intersection of polar arcs.

Diagram showing a spherical triangle constructed by the intersection of polar arcs.

Spherical Triangle

Diagram showing a spherical triangle constructed by the intersection of polar arcs.

Diagram used to prove the theorem: "In a spherical triangle, the greater side is opposite the greater angle, and conversely."

Side Comparison of Spherical Triangle

Diagram used to prove the theorem: "In a spherical triangle, the greater side is opposite the greater…

Diagram used to prove the theorem: "The area of a spherical triangle, expressed in spherical degrees, is equal to its spherical excess expressed in angular degrees."

Area of Spherical Triangle

Diagram used to prove the theorem: "The area of a spherical triangle, expressed in spherical degrees,…

Illustration showing the correct and incorrect position of a right line pen against a T-square, triangle, or straight edge when doing geometric constructions.

Positioning Pen for Constructions

Illustration showing the correct and incorrect position of a right line pen against a T-square, triangle,…

Illustration used to construct an equilateral triangle on a given base.

Construction of an Equilateral Triangle

Illustration used to construct an equilateral triangle on a given base.

Illustration used to construct a triangle given the length of the base and the two base angles.

Construction of Triangle Given Angles and Base

Illustration used to construct a triangle given the length of the base and the two base angles.

"The gyron is a triangular figure formed by drawing a line from the dexter angle of the chief of the shield to the fess point, and an horizontal line from that point to the dexter side of the shield." -Hall, 1862

Gyron Ordinary

"The gyron is a triangular figure formed by drawing a line from the dexter angle of the chief of the…

"Gyrony of eight pieces, argent and gules. The field is said to be gyrony when it is covered with gyrons." -Hall, 1862

Gyrony Ordinary

"Gyrony of eight pieces, argent and gules. The field is said to be gyrony when it is covered with gyrons."…

The NO PASSING ZONE sign shall be a pennant-shaped isosceles triangle with its longer axis horizontal and pointing to the right. When used, the NO PASSING ZONE sign shall be installed on the left side of the roadway at the beginning of no-passing zones identified by either pavement markings or DO NOT PASS signs or both.

No Passing Zone, Black and White

The NO PASSING ZONE sign shall be a pennant-shaped isosceles triangle with its longer axis horizontal…

The NO PASSING ZONE sign shall be a pennant-shaped isosceles triangle with its longer axis horizontal and pointing to the right. When used, the NO PASSING ZONE sign shall be installed on the left side of the roadway at the beginning of no-passing zones identified by either pavement markings or DO NOT PASS signs or both.

No Passing Zone, Color

The NO PASSING ZONE sign shall be a pennant-shaped isosceles triangle with its longer axis horizontal…

"Argent, three legs armed, conjoined at the fess point at the upper extremity of the thigh, flexed in a triangle, garnished and spurred, or. CONJOINED. Joined together." -Hall, 1862

Legs Conjoined

"Argent, three legs armed, conjoined at the fess point at the upper extremity of the thigh, flexed in…

"GYRON. A triangular figure formed by two lines from one of the angles of the shield to the centre. The gyron may be drawn in any part of the shield, but it is generally placed as in the annexed example." -Hall, 1862

Gyron

"GYRON. A triangular figure formed by two lines from one of the angles of the shield to the centre.…

An illustration of a simple border comprised of multiple triangles.

Simple Triangle Border

An illustration of a simple border comprised of multiple triangles.

"Argent, a pile, purpure. PILE. An angular figure like a wedge, formed by lines running from the dexter and sinister chief to the middle base." -Hall, 1862

Pile

"Argent, a pile, purpure. PILE. An angular figure like a wedge, formed by lines running from the dexter…

Illustration used to prove "An exterior angle of a triangle is equal to the sum of the two remote interior angles."

Exterior Angle Proof

Illustration used to prove "An exterior angle of a triangle is equal to the sum of the two remote interior…

Illustration used to prove "The line bisecting one side of a triangle and parallel to another side bisects the third side."

Line Bisecting Side of a Triangle

Illustration used to prove "The line bisecting one side of a triangle and parallel to another side bisects…

Illustration used to prove "The line joining the mid-points of two sides of a triangle is parallel to the third side and equal to one half the third side."

Line Joining Midpoints on a Triangle

Illustration used to prove "The line joining the mid-points of two sides of a triangle is parallel to…

Illustration used to prove "The bisectors of the angles of a triangle are concurrent in a point which is equidistant from the three sides of the triangle."

Angle Bisectors In A Triangle

Illustration used to prove "The bisectors of the angles of a triangle are concurrent in a point which…

Illustration used to prove "The perpendicular bisectors of the sides of a triangle are concurrent in a point which is equidistant from the three vertices of the triangle."

Perpendicular Bisectors In A Triangle

Illustration used to prove "The perpendicular bisectors of the sides of a triangle are concurrent in…

Illustration used to show "The altitudes of a triangle are concurrent."

Altitudes In A Triangle

Illustration used to show "The altitudes of a triangle are concurrent."

Illustration used to show "Any two medians of a triangle intersect each other in a trisection point of each."

Medians In A Triangle

Illustration used to show "Any two medians of a triangle intersect each other in a trisection point…

Illustration used to show "If one acute angle of a right triangle is double the other, the hypotenuse is double the shorter side."

Relationships In A Right Triangle

Illustration used to show "If one acute angle of a right triangle is double the other, the hypotenuse…

Illustration used to show the various parts of a triangle: sides, angles, medians, altitudes, bisectors, and segments.

Parts Of A Triangle

Illustration used to show the various parts of a triangle: sides, angles, medians, altitudes, bisectors,…

"Gyronny of eight, gules and argent. GYRONNY. In heraldry, dividend into a number of triangular parts of two different tinctures." -Whitney, 1911

Gyronny

"Gyronny of eight, gules and argent. GYRONNY. In heraldry, dividend into a number of triangular parts…

Color flag of American Samoa. Blue, with a white triangle edged in red that is based on the fly side and extends to the hoist side; a brown and white American bald eagle flying toward the hoist side is carrying two traditional Samoan symbols of authority, a war club known as a "Fa'alaufa'i" (upper; left talon), and a coconut fiber fly whisk known as a "Fue" (lower; right talon); the combination of symbols broadly mimics that seen on the US Great Seal and reflects the relationship between the United States and American Samoa.

Flag of American Samoa, 2009

Color flag of American Samoa. Blue, with a white triangle edged in red that is based on the fly side…

Black and white outline flag of American Samoa. Blue, with a white triangle edged in red that is based on the fly side and extends to the hoist side; a brown and white American bald eagle flying toward the hoist side is carrying two traditional Samoan symbols of authority, a war club known as a "Fa'alaufa'i" (upper; left talon), and a coconut fiber fly whisk known as a "Fue" (lower; right talon); the combination of symbols broadly mimics that seen on the US Great Seal and reflects the relationship between the United States and American Samoa

Flag of American Samoa, 2009

Black and white outline flag of American Samoa. Blue, with a white triangle edged in red that is based…

Color flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based on the top edge of the flag; the triangle contains three horizontal bands of black (top), light blue, and white, with a yellow rising sun in the black band.

Flag of Antigua and Barbuda, 2009

Color flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based on the top edge of…

Black and white outline flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based on the top edge of the flag; the triangle contains three horizontal bands of black (top), light blue, and white, with a yellow rising sun in the black band

Flag of Antigua and Barbuda, 2009

Black and white outline flag of Antigua and Barbuda. Red, with an inverted isosceles triangle based…

Color flag of the Bahamas, Three equal horizontal bands of aquamarine (top), gold, and aquamarine, with a black equilateral triangle based on the hoist side.

Flag of the Bahamas, 2009

Color flag of the Bahamas, Three equal horizontal bands of aquamarine (top), gold, and aquamarine, with…

Black and white outline flag of the Bahamas. Three equal horizontal bands of aquamarine (top), gold, and aquamarine, with a black equilateral triangle based on the hoist side

Flag of Bahamas, The, 2009

Black and white outline flag of the Bahamas. Three equal horizontal bands of aquamarine (top), gold,…

Color flag of Bosnia and Herzegovina. A wide medium blue vertical band on the fly side with a yellow isosceles triangle abutting the band and the top of the flag; the remainder of the flag is medium blue with seven full five-pointed white stars and two half stars top and bottom along the hypotenuse of the triangle.

Flag of Bosnia and Herzegovina, 2009

Color flag of Bosnia and Herzegovina. A wide medium blue vertical band on the fly side with a yellow…

Black and white outline flag of Bosnia and Herzegovina. A wide medium blue vertical band on the fly side with a yellow isosceles triangle abutting the band and the top of the flag; the remainder of the flag is medium blue with seven full five-pointed white stars and two half stars top and bottom along the hypotenuse of the triangle

Flag of Bosnia and Herzegovina, 2009

Black and white outline flag of Bosnia and Herzegovina. A wide medium blue vertical band on the fly…

Color flag of Christmas Island. Territorial flag; divided diagonally from upper hoist to lower fly; the upper triangle is green with a yellow image of the Golden Bosun Bird superimposed, the lower triangle is blue with the Southern Cross constellation, representing Australia, superimposed; a centered yellow disk displays a green map of the island.

Flag of Christmas Island, 2009

Color flag of Christmas Island. Territorial flag; divided diagonally from upper hoist to lower fly;…

Black and white outline flag of Christmas Island. Territorial flag; divided diagonally from upper hoist to lower fly; the upper triangle is green with a yellow image of the Golden Bosun Bird superimposed, the lower triangle is blue with the Southern Cross constellation, representing Australia, superimposed; a centered yellow disk displays a green map of the island

Flag of Christmas Island, 2009

Black and white outline flag of Christmas Island. Territorial flag; divided diagonally from upper hoist…

Color flag of Comoros. Four equal horizontal bands of yellow (top), white, red, and blue, with a green isosceles triangle based on the hoist; centered within the triangle is a white crescent with the convex side facing the hoist and four white, five-pointed stars placed vertically in a line between the points of the crescent; the horizontal bands and the four stars represent the four main islands of the archipelago - Mwali, N'gazidja, Nzwani, and Mahore (Mayotte - territorial collectivity of France, but claimed by Comoros).

Flag of Comoros, 2009

Color flag of Comoros. Four equal horizontal bands of yellow (top), white, red, and blue, with a green…

Black and white outline flag of Comoros. Four equal horizontal bands of yellow (top), white, red, and blue, with a green isosceles triangle based on the hoist; centered within the triangle is a white crescent with the convex side facing the hoist and four white, five-pointed stars placed vertically in a line between the points of the crescent; the horizontal bands and the four stars represent the four main islands of the archipelago - Mwali, N'gazidja, Nzwani, and Mahore (Mayotte - territorial collectivity of France, but claimed by Comoros)

Flag of Comoros, 2009

Black and white outline flag of Comoros. Four equal horizontal bands of yellow (top), white, red, and…

Color flag of Czech Republic. Two equal horizontal bands of white (top) and red with a blue isosceles triangle based on the hoist side.

Flag of Czech Republic, 2009

Color flag of Czech Republic. Two equal horizontal bands of white (top) and red with a blue isosceles…

Black and white outline flag of Czech Republic. Two equal horizontal bands of white (top) and red with a blue isosceles triangle based on the hoist side

Flag of Czech Republic, 2009

Black and white outline flag of Czech Republic. Two equal horizontal bands of white (top) and red with…

Color flag of Djibouti. Two equal horizontal bands of light blue (top) and light green with a white isosceles triangle based on the hoist side bearing a red five-pointed star in the center.

Flag of Djibouti, 2009

Color flag of Djibouti. Two equal horizontal bands of light blue (top) and light green with a white…

Black and white outline flag of Djibouti. Two equal horizontal bands of light blue (top) and light green with a white isosceles triangle based on the hoist side bearing a red five-pointed star in the center

Flag of Djibouti, 2009

Black and white outline flag of Djibouti. Two equal horizontal bands of light blue (top) and light green…

Color flag of Eritrea. Red isosceles triangle (based on the hoist side) dividing the flag into two right triangles; the upper triangle is green, the lower one is blue; a gold wreath encircling a gold olive branch is centered on the hoist side of the red triangle.

Flag of Eritrea, 2009

Color flag of Eritrea. Red isosceles triangle (based on the hoist side) dividing the flag into two right…

Black and white outline flag of Eritrea. Red isosceles triangle (based on the hoist side) dividing the flag into two right triangles; the upper triangle is green, the lower one is blue; a gold wreath encircling a gold olive branch is centered on the hoist side of the red triangle

Flag of Eritrea, 2009

Black and white outline flag of Eritrea. Red isosceles triangle (based on the hoist side) dividing the…

Color flag of Grenada. A rectangle divided diagonally into yellow triangles (top and bottom) and green triangles (hoist side and outer side), with a red border around the flag; there are seven yellow, five-pointed stars with three centered in the top red border, three centered in the bottom red border, and one on a red disk superimposed at the center of the flag; there is also a symbolic nutmeg pod on the hoist-side triangle (Grenada is the world's second-largest producer of nutmeg, after Indonesia); the seven stars represent the seven administrative divisions.

Flag of Grenada, 2009

Color flag of Grenada. A rectangle divided diagonally into yellow triangles (top and bottom) and green…

Black and white outline flag of Grenada. A rectangle divided diagonally into yellow triangles (top and bottom) and green triangles (hoist side and outer side), with a red border around the flag; there are seven yellow, five-pointed stars with three centered in the top red border, three centered in the bottom red border, and one on a red disk superimposed at the center of the flag; there is also a symbolic nutmeg pod on the hoist-side triangle (Grenada is the world's second-largest producer of nutmeg, after Indonesia); the seven stars represent the seven administrative divisions

Flag of Grenada, 2009

Black and white outline flag of Grenada. A rectangle divided diagonally into yellow triangles (top and…

Color flag of Guyana. Green, with a red isosceles triangle (based on the hoist side) superimposed on a long, yellow arrowhead; there is a narrow, black border between the red and yellow, and a narrow, white border between the yellow and the green.

Flag of Guyana, 2009

Color flag of Guyana. Green, with a red isosceles triangle (based on the hoist side) superimposed on…

Black and white outline flag of Guyana. Green, with a red isosceles triangle (based on the hoist side) superimposed on a long, yellow arrowhead; there is a narrow, black border between the red and yellow, and a narrow, white border between the yellow and the green

Flag of Guyana, 2009

Black and white outline flag of Guyana. Green, with a red isosceles triangle (based on the hoist side)…

Color flag of Jordan. Three equal horizontal bands of black (top), representing the Abbassid Caliphate, white, representing the Ummayyad Caliphate, and green, representing the Fatimid Caliphate; a red isosceles triangle on the hoist side, representing the Great Arab Revolt of 1916, and bearing a small white seven-pointed star symbolizing the seven verses of the opening Sura (Al-Fatiha) of the Holy Koran; the seven points on the star represent faith in One God, humanity, national spirit, humility, social justice, virtue, and aspirations; design is based on the Arab Revolt flag of World War I.

Flag of Jordan, 2009

Color flag of Jordan. Three equal horizontal bands of black (top), representing the Abbassid Caliphate,…

Black and white outline flag of Jordan. Three equal horizontal bands of black (top), representing the Abbassid Caliphate, white, representing the Ummayyad Caliphate, and green, representing the Fatimid Caliphate; a red isosceles triangle on the hoist side, representing the Great Arab Revolt of 1916, and bearing a small white seven-pointed star symbolizing the seven verses of the opening Sura (Al-Fatiha) of the Holy Koran; the seven points on the star represent faith in One God, humanity, national spirit, humility, social justice, virtue, and aspirations; design is based on the Arab Revolt flag of World War I

Flag of Jordan, 2009

Black and white outline flag of Jordan. Three equal horizontal bands of black (top), representing the…

Color flag of Namibia. A wide red stripe edged by narrow white stripes divides the flag diagonally from lower hoist corner to upper fly corner; the upper hoist-side triangle is blue and charged with a yellow, 12-rayed sunburst; the lower fly-side triangle is green.

Flag of Namibia, 2009

Color flag of Namibia. A wide red stripe edged by narrow white stripes divides the flag diagonally from…

Black and white outline flag of Namibia. A wide red stripe edged by narrow white stripes divides the flag diagonally from lower hoist corner to upper fly corner; the upper hoist-side triangle is blue and charged with a yellow, 12-rayed sunburst; the lower fly-side triangle is green

Flag of Namibia, 2009

Black and white outline flag of Namibia. A wide red stripe edged by narrow white stripes divides the…

Color flag of Nepal. Red with a blue border around the unique shape of two overlapping right triangles; the smaller, upper triangle bears a white stylized moon and the larger, lower triangle bears a white 12-pointed sun.

Flag of Nepal, 2009

Color flag of Nepal. Red with a blue border around the unique shape of two overlapping right triangles;…

Black and white outline flag of Nepal. Red with a blue border around the unique shape of two overlapping right triangles; the smaller, upper triangle bears a white stylized moon and the larger, lower triangle bears a white 12-pointed sun

Flag of Nepal, 2009

Black and white outline flag of Nepal. Red with a blue border around the unique shape of two overlapping…