Area of a Triangle

Front

What is the formula to calculate the area of a triangle?

Back

A = (base × height) ÷ 2

Front

What does 'base' refer to in a triangle?

Back

The base is one side of the triangle, often the bottom side used for calculating area.

Front

What does 'height' refer to in a triangle?

Back

The height is the perpendicular distance from the base to the opposite vertex.

Front

If the base of a triangle is 8 cm and the height is 5 cm, what is the area?

Back

20 cm²

Front

What is the area of a triangle with a base of 10 in and a height of 6 in?

Back

30 in²

Front

What units do we use to show area?

Back

squared units (e.g., cm², in², m²)

Front

If a triangle has an area of 12 cm² and a base of 4 cm, what is the height?

Back

Height = (Area × 2) ÷ base = (12 cm² × 2) ÷ 4 cm = 6 cm

Front

What is the area of a triangle with a base of 12 yd and a height of 4 yd?

Back

24 yd²

Front

How does changing the base of a triangle affect its area?

Back

Increasing the base while keeping height constant increases the area, and vice versa.

Front

How does changing the height of a triangle affect its area?

Back

Increasing the height while keeping the base constant increases the area, and vice versa.