Composing 2-D Shapes

How many triangles are needed to make a trapezoid?

• 1

• 2

• 3

• 4

How many trapezoids are needed to make an hexagon?

• 1

• 2

• 3

• 4

How many triangles and trapezoids are needed to make a larger triangle?

• 1 triangle

  1 trapezoid

• 1 triangle

  2 trapezoids

• 2 triangles

  1 trapezoid

• 2 triangles

  2 trapezoids

How many triangles are needed to make a hexagon?

• 9

• 5

• 7

• 6

How many rectangles and trapezoids are needed to make an octagon?

• 1 rectangle

  1 trapezoid

• 1 rectangle

  2 trapezoids

• 2 rectangles

  1 trapezoids

• 2 triangles

  2 trapezoids

How many triangles are needed to make this larger triangle?

• 4

• 5

• 6

• 3