Area of Triangles

Front

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

Back

base and height

Front

A triangle with a height of 20 cm and a base of 9 cm has an area of what?

Back

90 cm squared

Front

Find the area of the figure:

Back

30 ft²

Front

Find the Area of this triangle:

Back

18.9 km²

Front

Find the area of a triangle with a height of 4 mm and a base of 6 mm?

Back

12 mm squared

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

If the base of a triangle is doubled, how does the area change?

Back

The area doubles.

Front

If the height of a triangle is halved, how does the area change?

Back

The area is halved.

Front

What is the area of a triangle with a base of 10 cm and a height of 5 cm?

Back

25 cm squared

Front

What do you call a triangle with all sides of different lengths?

Back

Scalene triangle