Area of Triangles and Parallelograms

Front

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

Back

A = 1/2 × b × h, where b is the base and h is the height.

Front

What is the formula to find the area of a parallelogram?

Back

A = b × h, where b is the base and h is the height.

Front

What is the area of a triangle with a base of 8 units and a height of 5 units?

Back

20 square units (A = 1/2 × 8 × 5).

Front

What is the area of a parallelogram with a base of 10 cm and a height of 4 cm?

Back

40 cm² (A = 10 × 4).

Front

If the base of a triangle is doubled, what happens to the area?

Back

The area also doubles, assuming the height remains the same.

Front

If the height of a parallelogram is halved, what happens to the area?

Back

The area is also halved, assuming the base remains the same.

Front

What is the area of a triangle with a base of 12 cm and a height of 6 cm?

Back

36 cm² (A = 1/2 × 12 × 6).

Front

What is the area of a parallelogram with a base of 15 feet and a height of 3 feet?

Back

45 square feet (A = 15 × 3).

Front

True or False: The area of a triangle can be found using the formula A = b × h.

Back

False. The correct formula is A = 1/2 × b × h.

Front

What is the area of a triangle with a base of 10 units and a height of 2 units?

Back

10 square units (A = 1/2 × 10 × 2).