Find the Area of Triangles by Decomposing

Select the statement that is true about all three figures

• The area of the first figure is greater than the others

• The areas are all equal

• The area of the middle figure is the smallest of the three

• We don't have enough information to compare the areas

Mai found the area of figure D by cutting the shape in half, moving the smaller triangles together, and making a new rectangle. Which strategy best describes what Mai did?

• decomposing

• enclosing and subtracting

• decomposing and rearranging

What is the area of figure D

The amount of space inside a closed two-dimensional figure. It is measured in square units.

• Volume

• Area

• Length

• Feet

Find the area of the triangles. Remember:- Base and height must form a right angle- Always divide by 2 on triangles

a

b

c

d

e

f

h

g

Find the area of the triangles.

Remember:

- Base and height must form a right angle

- Always divide by 2 on triangles

a

b

c

d

e

f

h

g

A triangle has a base of 10 cm and a height of 6 cm. What is its area?

• 60 cm²

• 30 cm²

• 20 cm²

• 15 cm²

Find the area

• 19.5

• 8.3

• 39

• 22.5

Find the area

• 23.04

• 22.05

• 21.06

• 20.07

Area

• 12 in sq

• 12 in

• 24 in sq

• 6 in sq