 ### Bisected Vertical Angle of an Isosceles Triangle

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

A flashcard featuring an illustration of an Isosceles Triangle ### Vertical Line of Symmetry, Isosceles Triangle With

Isosceles Triangle with a dotted vertical line that is a line of symmetry. ### Angle Bisectors In An Isosceles Triangle

Illustration showing that if two angles of a triangle are equal, the bisectors of these angles 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. ### Construction Of An Isosceles Triangle

Illustration of the construction used to create an isosceles triangle, given the bases and the sum of… ### Equal Segments In An Isosceles Triangle

Illustration showing that if equal segments measured from the vertex are laid off on the arms of an… ### Equal Segments In An Isosceles Triangle

Illustration showing that if equal segments prolonged through the vertex are laid off on the arms of… ### 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… ### Equal Segments In An Isosceles Triangle

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

Illustration of 2 similar right pentagonal pyramids with hidden edges shown. The height of the pyramid… ### Right Triangle degrees 45 45, 90

A right triangle with degrees 45, 45, 90. ### 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. 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… ### Shapes Outline Tangram Card

Outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow, rhombus, hexagon) made… ### Shapes Outline Solution Tangram Card

Solutions for outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow, rhombus,… ### Shapes Silhouette Tangram Card

Silhouette outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow, rhombus,… ### Shapes Silhouette Solution Tangram Card

Solutions for silhouette outlines of shapes (rectangle, parallelogram, isosceles triangle, double arrow,… ### 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… ### Isosceles Triangle degrees 1, 89.5, 89.5

An isosceles triangle with angles 1, 89.5, 89.5 ### Isosceles Triangle degrees 10, 85, 85

An isosceles triangle with angles 10, 85, 85 ### Isosceles Triangle degrees 100, 40, 40

An isosceles triangle with angles 100, 40, 40 ### Isosceles Triangle degrees 101, 39.5, 39.5

An isosceles triangle with angles 101, 39.5, 39.5 ### Isosceles Triangle degrees 102, 39, 39

An isosceles triangle with angles 102, 39, 39 ### Isosceles Triangle degrees 103, 38.5, 38.5

An isosceles triangle with angles 103, 38.5, 38.5 ### Isosceles Triangle degrees 104, 38, 38

An isosceles triangle with angles 104, 38, 38 ### Isosceles Triangle degrees 105, 37.5, 37.5

An isosceles triangle with angles 105, 37.5, 37.5 ### Isosceles Triangle degrees 106, 37, 37

An isosceles triangle with angles 106, 37, 37 ### Isosceles Triangle degrees 107, 36.5, 36.5

An isosceles triangle with angles 107, 36.5, 36.5 ### Isosceles Triangle degrees 108, 36, 36

An isosceles triangle with angles 108, 36, 36 ### Isosceles Triangle degrees 109, 35.5, 35.5

An isosceles triangle with angles 109, 35.5, 35.5 ### Isosceles Triangle degrees 11, 84.5, 84.5

An isosceles triangle with angles 11, 84.5, 84.5 ### Isosceles Triangle degrees 110, 35, 35

An isosceles triangle with angles 110, 35, 35 ### Isosceles Triangle degrees 111, 34.5, 34.5

An isosceles triangle with angles 111, 34.5, 34.5 ### Isosceles Triangle degrees 112, 34, 34

An isosceles triangle with angles 112, 34, 34 ### Isosceles Triangle degrees 113, 33.5, 33.5

An isosceles triangle with angles 113, 33.5, 33.5 ### Isosceles Triangle degrees 114, 33, 33

An isosceles triangle with angles 114, 33, 33 ### Isosceles Triangle degrees 115, 32.5, 32.5

An isosceles triangle with angles 115, 32.5, 32.5 ### Isosceles Triangle degrees 116, 32, 32

An isosceles triangle with angles 116, 32, 32 ### Isosceles Triangle degrees 117, 31.5, 31.5

An isosceles triangle with angles 117, 31.5, 31.5 ### Isosceles Triangle degrees 118, 31, 31

An isosceles triangle with angles 118, 31, 31 ### Isosceles Triangle degrees 119, 30.5, 30.5

An isosceles triangle with angles 119, 30.5, 30.5 ### Isosceles Triangle degrees 12, 84, 84

An isosceles triangle with angles 12, 84, 84 ### Isosceles Triangle degrees 120, 30, 30

An isosceles triangle with angles 120, 30, 30 ### Isosceles Triangle degrees 121, 29.5, 29.5

An isosceles triangle with angles 121, 29.5, 29.5 ### Isosceles Triangle degrees 122, 29, 29

An isosceles triangle with angles 122, 29, 29 ### Isosceles Triangle degrees 123, 28.5, 28.5

An isosceles triangle with angles 123, 28.5, 28.5 ### Isosceles Triangle degrees 124, 28, 28

An isosceles triangle with angles 124, 28, 28 ### Isosceles Triangle degrees 125, 27.5, 27.5

An isosceles triangle with angles 125, 27.5, 27.5 ### Isosceles Triangle degrees 126, 27, 27

An isosceles triangle with angles 126, 27, 27 ### Isosceles Triangle degrees 127, 26.5, 26.5

An isosceles triangle with angles 127, 26.5, 26.5 ### Isosceles Triangle degrees 128, 26, 26

An isosceles triangle with angles 128, 26, 26 ### Isosceles Triangle degrees 129, 25.5, 25.5

An isosceles triangle with angles 129, 25.5, 25.5 ### Isosceles Triangle degrees 13, 83.5, 83.5

An isosceles triangle with angles 13, 83.5, 83.5 ### Isosceles Triangle degrees 130, 25, 25

An isosceles triangle with angles 130, 25, 25 ### Isosceles Triangle degrees 131, 24.5, 24.5

An isosceles triangle with angles 131, 24.5, 24.5 ### Isosceles Triangle degrees 132, 24, 24

An isosceles triangle with angles 132, 24, 24