Decomposing Shapes 2D

Roger wants to cut a hexagon into triangles of equal size. For the first triangle, he cuts along the dotted lines. How many triangles of this size can Roger cut from the hexagon?

• 3

• 4

• 8

• 6

Jesse cuts this figure into two halves, as shown above. Which shape is each half?

• Rectangle

• Triangle

• Square

• Circle

David cuts the square in half along the dotted line. What new shapes does David create?

• Circles

• Rectangles

• Squares

• Triangles

If the 2 trapezoids are put together on the dotted line, what new shape will they make?

• Square

• Rectangle

• Triangle

• Hexagon

What does it mean to decompose a shape?

• break a figure into pieces

• move the shape around

• build a shape

• none of the above

To break a complex shape into shapes or pieces you know is called _____;

• Decompose

• Compose

• Area

• Volume

​ (a)   Triangles

​ (b)   Squares

​ (c)   Rectangle

​ (d)   Trapezoids

• 2

• 0

• 1

• 3

• 4

• 5

• 6

• 7

• 8

• 9

Look at the rhombus.

What two shapes can be put together to make this rhombus?

• 
• 
• 

We can form a rectangle by combining 2 __________.

• circles

• squares

• triangles

What are the attributes?

• 6 sides and 6 vertices

• 5 lines and 5 corners

• yellow