Finding Areas of a Triangle

Area of triangle?

• 17 units²

• 20 units²

• 10 units²

• 16 units²

How do you find the AREA of a TRIANGLE?

• Height x Base divided by 4

• Length x Width

• 1/3 (Length x width)

• 1/2 (Base x height)

The formula for finding the area of a triangle

• lw

• bh

• h(b1 +b2)/2

• bh/2

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

Calculate the area of a triangle with sides measuring 6 cm, 8 cm, and 10 cm.

• 24 cm²

• 48 cm²

• 12 cm²

• 36 cm²

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

If a triangle has an area of 24 m² and a base of 8 m, what is its height?

• 3 m

• 4 m

• 5 m

• 6 m

What shape is the base? What is the area of the base (B)?

• Rectangle; 60in²

• Triangle; 12 in²

• Rectangle; 32 in²

• Triangle; 6 in²

What is the total surface area of the triangular prism shown? 

• 468 in²

• 540 in²

• 576 in²

• 700 in²