 ### Isosceles Triangle degrees 93, 43.5, 43.5

An isosceles triangle with angles 93, 43.5, 43.5 ### Isosceles Triangle degrees 94, 43, 43

An isosceles triangle with angles 94, 43, 43 ### Isosceles Triangle degrees 95, 42.5, 42.5

An isosceles triangle with angles 95, 42.5, 42.5 ### Isosceles Triangle degrees 96, 42, 42

An isosceles triangle with angles 96, 42, 42 ### Isosceles Triangle degrees 97, 41.5, 41.5

An isosceles triangle with angles 97, 41.5, 41.5 ### Isosceles Triangle degrees 98, 41, 41

An isosceles triangle with angles 98, 41, 41 ### Isosceles Triangle degrees 99, 40.5, 40.5

An isosceles triangle with angles 99, 40.5, 40.5 ### Isosceles Triangle With Interior Segment Drawn

Illustration showing an isosceles triangle with a segment inside. This can be used to show that in an… ### Leg Produced through the Vertex of an Isosceles Triangle

Illustration to show that if one of the legs of an isosceles triangle is produced through the vertex… ### Medians Drawn Drawn to Legs of Isosceles Triangles

Illustration to show the medians drawn to the legs of an isosceles triangle. ### Midpoints of Triangle Divide Triangle into Four Equal Triangles

Illustration to show that if the lines joining the middle points of the sides of a triangle divide the… ### Obtuse Triangle

Illustration showing an obtuse triangle (one that has one obtuse angle). ### Orthocenter of Triangle

Illustration to show altitudes in a triangle. It is known as the orthocenter. ### Parts Of A Triangle

Illustration used to show the various parts of a triangle: sides, angles, medians, altitudes, bisectors,… ### Perpendicular Bisector of the Base of an Isosceles Triangle

Illustration to show that the perpendicular bisector of the base of an isosceles triangle passes through… ### Perpendicular Bisectors In A Triangle

Illustration used to prove "The perpendicular bisectors of the sides of a triangle are concurrent in… ### Perpendiculars Dropped Any Point in the Equilateral Triangle

Illustration to show the perpendiculars dropped from any point in the equilateral triangle to the three… ### Perpendiculars Dropped From Midpoint of Base to Legs of Isosceles Triangles

Illustration to show the perpendiculars dropped from the midpoint of the base to the legs of an isosceles… ### Point in Base of Isosceles Triangle

Illustration to show that the difference of the distances from any point in the base produced of an… ### Pythagorean Theorem Triangle

Right triangle with squares that can be used to illustrate the Pythagorean Theorem. ### Right Triangle

Illustration showing a right triangle (one that has one right angle). ### Inclined Plane Forming Right Triangle

Inclined plane forming right triangle showing the velocity of a body sliding a distance,s, down a smooth… ### Right Triangle OCB With, x, y, and r shown

Right triangle OCB that can be used to show the relationships between x, y, r, and Θ. ### Right Triangle ABC With Angle 67 degrees 42.8 minutes and Hypotenuse 23.47 ft.

Right triangle ABC with a base angle of 67 degrees 4208 minutes and a hypotenuse of 23.47 ft. ### Right Triangle ABC With Leg 23.85 ft. and Hypotenuse 35.62 ft.

Right triangle ABC with a leg of 23.85 feet and a hypotenuse of 35.62 feet. ### Right Triangle With One Angle Double the Other

Illustration of a right triangle with one angle the double of the other. ### Scalene Triangle

Illustration showing a scalene triangle (one that has no two sides equal). ### Triangle With Segment Extended for Exterior Angle

Illustration showing a triangle with an exterior segment drawn to show and exterior angle. This can… ### Triangle With Interior Segment

Illustration showing a triangle with an interior segment drawn ### Segments Labeled In A Triangle

Illustration of triangle ABC with BE extended through the triangle at point D. Segment AB is equal to… ### Triangle With Interior Segment Drawn

Illustration showing a triangle with a segment inside. ### Triangle Set Up for 15 Degrees

15 degrees with the horizontal or 75 degrees with the vertical. ### Triangle Set Up for 30 Degrees

30 degrees with the horizontal or 60 degrees with the vertical. ### Triangle Set Up for 45 Degrees

45 degrees with the horizontal or 45 degrees with the vertical. ### Triangle Set Up for 60 Degrees

60 degrees with the horizontal or 30 degrees with the vertical. ### Triangle Set Up for 75 Degrees

75 degrees with the horizontal or 15 degrees with the vertical. ### Equal Triangles

Illustration showing two equal triangles. ### Equal Triangles by Side Side Side

Illustration showing two equal triangles. This can be used to show that two triangles are equal if the… ### Proof of Equal Triangles Drawing

Illustration to show if two triangles have two sides of the one equal, respectively, to two sides of… ### Equal Right Triangles by Hypotenuse Leg

Illustration showing two equal right triangles. This can be used to show that two right triangles are… ### Three Triangles Used to Compare Sides

Illustration showing three triangles. This is used to show the following theorem: If two triangles have… ### Triangular City Block With Angles and Lengths

Illustration showing an angle of 23 degrees 40 minutes making a triangle in a city block and marking… ### Arcs and Angles of a Trigonometric Circle

"In trigonometry, the arcs of circles are used to measure angles. All angles are supposed to have their… ### Trigonometry Triangle to Show Sine, Cosine, and Tangent

Right triangle OCA, inside of Circle O is used to show that side AC is "opposite" O and side OC is "adjacent"… ### Face Angles of Trihedral Angle

Diagram used to prove the theorem: "The sum of two face angles of a trihedral angle is greater than… ### Vector

OP is a line representing a vector (directed quantity) ### Vector Showing Force at Angle of 20 degrees

OP is a vector (directed quantity) showing the force by a weight acting on it at an angle of 20 degrees.