ClipArt ETC
Illustration to show that the bisector of the vertical angle of an isosceles triangle bisects the base, and is perpendicular to the base.

Bisected Vertical Angle of an Isosceles Triangle

Illustration to show that the bisector of the vertical angle of an isosceles triangle bisects the base,…

Illustration to show that if through any point in the bisector of an angle a line is drawn parallel to either of the sides of the angle, the triangle thus formed is isosceles.

Angle Bisector Drawn Parallel to A Side

Illustration to show that if through any point in the bisector of an angle a line is drawn parallel…

A flashcard featuring an illustration of an Isosceles Triangle

Flashcard of an Isosceles Triangle

A flashcard featuring an illustration of an Isosceles Triangle

Isosceles Triangle with a dotted vertical line that is a line of symmetry.

Vertical Line of Symmetry, Isosceles Triangle With

Isosceles Triangle with a dotted vertical line that is a line of symmetry.

Illustration showing that if two angles of a triangle are equal, the bisectors of these angles are equal.

Angle Bisectors In An Isosceles Triangle

Illustration showing that if two angles of a triangle are equal, the bisectors of these angles are equal.

Illustration showing that can be used to prove that the base angles of an isosceles triangle are equal.

Base Angles In An Isosceles Triangle

Illustration showing that can be used to prove that the base angles of an isosceles triangle are equal.

Illustration of the construction used to create an isosceles triangle, given the bases and the sum of the altitude and a side.

Construction Of An Isosceles Triangle

Illustration of the construction used to create an isosceles triangle, given the bases and the sum of…

Illustration showing that if equal segments measured from the vertex are laid off on the arms of an isosceles triangle, the lines joining the ends of these segments to the opposite ends of the base will be equal.

Equal Segments In An Isosceles Triangle

Illustration showing that if equal segments measured from the vertex are laid off on the arms of an…

Illustration showing that if equal segments prolonged through the vertex are laid off on the arms of an isosceles triangle, the lines joining the ends of these segments to the opposite ends of the base will be equal.

Equal Segments In An Isosceles Triangle

Illustration showing that if equal segments prolonged through the vertex are laid off on the arms of…

Illustration showing that if equal segments measured from the end of the base are laid off on the base of an isosceles triangle, the lines joining the vertex of the triangle to the ends of the segments will be equal.

Equal Segments In An Isosceles Triangle

Illustration showing that if equal segments measured from the end of the base are laid off on the base…

Illustration showing that if equal segments measured from the end of the base prolonged are laid off on the base of an isosceles triangle, the lines joining the vertex of the triangle to the ends of the segments will be equal.

Equal Segments In An Isosceles Triangle

Illustration showing that if equal segments measured from the end of the base prolonged are laid off…

Illustration of 2 similar right pentagonal pyramids with hidden edges shown. The height of the pyramid and length of the side of the pentagon (base) on the smaller pentagonal pyramid are one half that of the larger.

Similar Pentagonal Pyramids

Illustration of 2 similar right pentagonal pyramids with hidden edges shown. The height of the pyramid…

A right triangle with degrees 45, 45, 90.

Right Triangle degrees 45 45, 90

A right triangle with degrees 45, 45, 90.

Four different types of forms or shapes: right triangle, isosceles triangle, rectangle, and circle.

Shapes

Four different types of forms or shapes: right triangle, isosceles triangle, rectangle, and circle.

Illustration of a stepladder that is opened to form an isosceles triangle with the ground.

Open Stepladder

Illustration of a stepladder that is opened to form an isosceles triangle with the ground.

Illustration of a stepladder that is opened to form an isosceles triangle with the ground.

Open Stepladder

Illustration of a stepladder that is opened to form an isosceles triangle with the ground.

Illustration of a giant stepladder, sometimes called a skyscraper stepladder, that is opened next to a palm tree. One of the bottom legs of the unfolded ladder is adjacent to the tree. The ladder forms an isosceles triangle with the ground.

Skyscraper Giant Stepladder

Illustration of a giant stepladder, sometimes called a skyscraper stepladder, that is opened next to…

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 Outline Tangram Card

Outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow, rhombus, hexagon) made…

Solutions for 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 Outline Solution Tangram Card

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

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,…

Solutions for 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 Solution Tangram Card

Solutions for silhouette outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow,…

Illustration to show that the bisector of an exterior angle of an isosceles triangle, formed by producing one of the legs through the vertex, is parallel o the base.

Bisector of an Exterior Angle of an Isosceles Triangle

Illustration to show that the bisector of an exterior angle of an isosceles triangle, formed by producing…

An isosceles triangle with angles 1, 89.5, 89.5

Isosceles Triangle degrees 1, 89.5, 89.5

An isosceles triangle with angles 1, 89.5, 89.5

An isosceles triangle with angles 10, 85, 85

Isosceles Triangle degrees 10, 85, 85

An isosceles triangle with angles 10, 85, 85

An isosceles triangle with angles 100, 40, 40

Isosceles Triangle degrees 100, 40, 40

An isosceles triangle with angles 100, 40, 40

An isosceles triangle with angles 101, 39.5, 39.5

Isosceles Triangle degrees 101, 39.5, 39.5

An isosceles triangle with angles 101, 39.5, 39.5

An isosceles triangle with angles 102, 39, 39

Isosceles Triangle degrees 102, 39, 39

An isosceles triangle with angles 102, 39, 39

An isosceles triangle with angles 103, 38.5, 38.5

Isosceles Triangle degrees 103, 38.5, 38.5

An isosceles triangle with angles 103, 38.5, 38.5

An isosceles triangle with angles 104, 38, 38

Isosceles Triangle degrees 104, 38, 38

An isosceles triangle with angles 104, 38, 38

An isosceles triangle with angles 105, 37.5, 37.5

Isosceles Triangle degrees 105, 37.5, 37.5

An isosceles triangle with angles 105, 37.5, 37.5

An isosceles triangle with angles 106, 37, 37

Isosceles Triangle degrees 106, 37, 37

An isosceles triangle with angles 106, 37, 37

An isosceles triangle with angles 107, 36.5, 36.5

Isosceles Triangle degrees 107, 36.5, 36.5

An isosceles triangle with angles 107, 36.5, 36.5

An isosceles triangle with angles 108, 36, 36

Isosceles Triangle degrees 108, 36, 36

An isosceles triangle with angles 108, 36, 36

An isosceles triangle with angles 109, 35.5, 35.5

Isosceles Triangle degrees 109, 35.5, 35.5

An isosceles triangle with angles 109, 35.5, 35.5

An isosceles triangle with angles 11, 84.5, 84.5

Isosceles Triangle degrees 11, 84.5, 84.5

An isosceles triangle with angles 11, 84.5, 84.5

An isosceles triangle with angles 110, 35, 35

Isosceles Triangle degrees 110, 35, 35

An isosceles triangle with angles 110, 35, 35

An isosceles triangle with angles 111, 34.5, 34.5

Isosceles Triangle degrees 111, 34.5, 34.5

An isosceles triangle with angles 111, 34.5, 34.5

An isosceles triangle with angles 112, 34, 34

Isosceles Triangle degrees 112, 34, 34

An isosceles triangle with angles 112, 34, 34

An isosceles triangle with angles 113, 33.5, 33.5

Isosceles Triangle degrees 113, 33.5, 33.5

An isosceles triangle with angles 113, 33.5, 33.5

An isosceles triangle with angles 114, 33, 33

Isosceles Triangle degrees 114, 33, 33

An isosceles triangle with angles 114, 33, 33

An isosceles triangle with angles 115, 32.5, 32.5

Isosceles Triangle degrees 115, 32.5, 32.5

An isosceles triangle with angles 115, 32.5, 32.5

An isosceles triangle with angles 116, 32, 32

Isosceles Triangle degrees 116, 32, 32

An isosceles triangle with angles 116, 32, 32

An isosceles triangle with angles 117, 31.5, 31.5

Isosceles Triangle degrees 117, 31.5, 31.5

An isosceles triangle with angles 117, 31.5, 31.5

An isosceles triangle with angles 118, 31, 31

Isosceles Triangle degrees 118, 31, 31

An isosceles triangle with angles 118, 31, 31

An isosceles triangle with angles 119, 30.5, 30.5

Isosceles Triangle degrees 119, 30.5, 30.5

An isosceles triangle with angles 119, 30.5, 30.5

An isosceles triangle with angles 12, 84, 84

Isosceles Triangle degrees 12, 84, 84

An isosceles triangle with angles 12, 84, 84

An isosceles triangle with angles 120, 30, 30

Isosceles Triangle degrees 120, 30, 30

An isosceles triangle with angles 120, 30, 30

An isosceles triangle with angles 121, 29.5, 29.5

Isosceles Triangle degrees 121, 29.5, 29.5

An isosceles triangle with angles 121, 29.5, 29.5

An isosceles triangle with angles 122, 29, 29

Isosceles Triangle degrees 122, 29, 29

An isosceles triangle with angles 122, 29, 29

An isosceles triangle with angles 123, 28.5, 28.5

Isosceles Triangle degrees 123, 28.5, 28.5

An isosceles triangle with angles 123, 28.5, 28.5

An isosceles triangle with angles 124, 28, 28

Isosceles Triangle degrees 124, 28, 28

An isosceles triangle with angles 124, 28, 28

An isosceles triangle with angles 125, 27.5, 27.5

Isosceles Triangle degrees 125, 27.5, 27.5

An isosceles triangle with angles 125, 27.5, 27.5

An isosceles triangle with angles 126, 27, 27

Isosceles Triangle degrees 126, 27, 27

An isosceles triangle with angles 126, 27, 27

An isosceles triangle with angles 127, 26.5, 26.5

Isosceles Triangle degrees 127, 26.5, 26.5

An isosceles triangle with angles 127, 26.5, 26.5

An isosceles triangle with angles 128, 26, 26

Isosceles Triangle degrees 128, 26, 26

An isosceles triangle with angles 128, 26, 26

An isosceles triangle with angles 129, 25.5, 25.5

Isosceles Triangle degrees 129, 25.5, 25.5

An isosceles triangle with angles 129, 25.5, 25.5

An isosceles triangle with angles 13, 83.5, 83.5

Isosceles Triangle degrees 13, 83.5, 83.5

An isosceles triangle with angles 13, 83.5, 83.5

An isosceles triangle with angles 130, 25, 25

Isosceles Triangle degrees 130, 25, 25

An isosceles triangle with angles 130, 25, 25

An isosceles triangle with angles 131, 24.5, 24.5

Isosceles Triangle degrees 131, 24.5, 24.5

An isosceles triangle with angles 131, 24.5, 24.5

An isosceles triangle with angles 132, 24, 24

Isosceles Triangle degrees 132, 24, 24

An isosceles triangle with angles 132, 24, 24