### 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