Area of a triangle

Area of a Triangle

Let's Practice the area of a triangle!

A triangle is half a rectangle

• The area of a rectangle is A=bh

• The Area of a triangle is A=1/2 (bh)  

Match

Match each triangle with it's base and height.

Base 9 in.

Height 8 in.

Base 5 ft.

Height 3 ft.

Base 11 cm

height 17 cm

• Base 9 in.

  Height 8 in.

• Base 5 ft.

  Height 3 ft.

• Base 11 cm

  height 17 cm

Multiple Choice

Which number is the height?

• 3

• 3.1

• 1.5

Multiple Choice

Which number is the base?

• 3

• 3.1

• 1.5

Multiple Choice

Find the area of the triangle.

• 4.5 units²

• 2.325 units²

• 2.25 units²

Multiple Choice

What is the height?

• 14

• 13.2

• 5

Multiple Choice

What is the base?

• 14

• 13.2

• 5

Multiple Choice

Find the area.

• 33 units²

• 66 units

• 35 units²

Multiple Choice

what is the height?

• 15

• 17

• 8

Multiple Choice

what is the base?

• 15

• 17

• 8

Multiple Choice

Find the area.

• 120 units

• 127.5 units²

• 60 units²

• 255 units²

Multiple Choice

The base of the triangle is ____.

• 9 m

• 4 m

• 18 m

Multiple Choice

The height of the parallelogram is ___m.

• 9

• 4

• 6

• 2

​

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Multiple Choice

Whenever we find area, the units are written as

• units

• units²

• units³

• it's always different exponents