Area of Triangles, Trapezoids, and Parallelograms

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height

Front

If the base of a triangle is 10 cm and the height is 5 cm, what is the area?

Back

Area = 1/2 × 10 cm × 5 cm = 25 cm²

Front

If a trapezoid has bases of 8 cm and 12 cm and a height of 5 cm, what is the area?

Back

Area = 1/2 × (8 cm + 12 cm) × 5 cm = 50 cm²

Front

What is the area of a parallelogram with a base of 6 m and a height of 4 m?

Back

Area = 6 m × 4 m = 24 m²

Front

How do you find the height of a triangle if you know the area and the base?

Back

Height = (2 × Area) / base

Front

What is the area of a triangle with a base of 12 cm and a height of 10 cm?

Back

Area = 1/2 × 12 cm × 10 cm = 60 cm²

Front

What is the area of a trapezoid with bases of 5 m and 15 m and a height of 3 m?

Back

Area = 1/2 × (5 m + 15 m) × 3 m = 30 m²

Front

If a parallelogram has an area of 36 cm² and a base of 9 cm, what is the height?

Back

Height = Area / base = 36 cm² / 9 cm = 4 cm