Area of Triangles

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 10 units and the height is 5 units, what is the area?

Back

Area = 1/2 × 10 × 5 = 25 square units

Front

What is the area of a triangle with a base of 8 cm and a height of 3 cm?

Back

Area = 1/2 × 8 × 3 = 12 square cm

Front

What is the base of a triangle?

Back

The base of a triangle is one of its sides, often the one on which the triangle stands.

Front

What is the height of a triangle?

Back

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

Front

If a triangle has an area of 30 square meters and a base of 10 meters, what is the height?

Back

Height = (Area × 2) / base = (30 × 2) / 10 = 6 meters

Front

What units are used to measure the area of a triangle?

Back

Square units (e.g., square meters, square centimeters, square inches) are used to measure area.

Front

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

Back

Increasing the base while keeping the height constant increases the area; decreasing the base decreases the area.

Front

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

Back

Increasing the height while keeping the base constant increases the area; decreasing the height decreases the area.

Front

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

Back

Area = 1/2 × 12 × 4 = 24 square inches