Area of Triangles

Front

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

Back

Area = 1/2 × base × height

Front

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

Back

Area = 1/2 × 10 cm × 5 cm = 25 cm²

Front

What is the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of all its sides.

Front

If a triangle has sides of lengths 5 cm, 12 cm, and 13 cm, what is its perimeter?

Back

Perimeter = 5 cm + 12 cm + 13 cm = 30 cm

Front

What is the area of a triangle with a base of 8 units and a height of 4 units?

Back

Area = 1/2 × 8 units × 4 units = 16 units²

Front

What does 'base' refer to in a triangle?

Back

The base is any one of the sides of the triangle, often the bottom side.

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 a triangle has an area of 30 cm² and a base of 10 cm, what is its height?

Back

Height = (Area × 2) / base = (30 cm² × 2) / 10 cm = 6 cm

Front

What is the area of a triangle with a base of 14 cm and a height of 3 cm?

Back

Area = 1/2 × 14 cm × 3 cm = 21 cm²

Front

If a triangle has sides of lengths 7 cm, 24 cm, and 25 cm, what is its perimeter?

Back

Perimeter = 7 cm + 24 cm + 25 cm = 56 cm