Area of Triangle and Composite Figures

How do you find the area of a triangle?

• Length x Width x 2

• Base x height

• Length x height divided by 3

• Base x height divided by 2

• Length x height x base

Find the area of this triangle.

• 6 x 7 =42 cm2

• 6 x 7 divided by 2 = 21 cm2

• 7 x 8 divided by 2 = 28 cm2

• 7 x 8 = 56 cm2

• 6 x 6 divided by 2 = 18 cm2

To find the area of a triangle, you need to know the _________ and ________.

(a)  

Which side is the base?

• 14 cm

• 6 cm

• 8 cm

• 18 cm

Which measurement is the height?

• 4 inch x 12 inch

• 3 inch

• 15 inch x 4 inch

• 12 inch

• 4 inch

What is the area of the triangle?

• 112 cm2

• 28 cm2

• 54 cm2

• 72 cm2

• 144 cm2

Find the area of the composite figure.

• 61 ft2

• 9 ft2

• 49 ft2

• 40 ft2

• 34 ft2

Find the area of this composite figure.

• 48 cm2

• 84 cm2

• 83 cm2

• 82 cm2

• 46 cm2

Find the area of the figure.

• 24 cm2

• 48 cm2

• 42 cm2

• 84 cm2

Find the area of the figure.

• 43 in2

• 90 in2

• 37 in2

• 102 in2