Area of Triangles

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What does 'base' refer to in a triangle?

Back

The base is any side of the triangle on which the height is perpendicular.

Front

What is 'height' in the context of a triangle?

Back

Height is the perpendicular distance from the base to the opposite vertex.

Front

Calculate the area of a triangle with a base of 8 cm and a height of 5 cm.

Back

Area = 1/2 × 8 cm × 5 cm = 20 cm²

Front

If the area of a triangle is 30 cm² and the base is 10 cm, what is the height?

Back

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

Front

What is the perimeter of a triangle?

Back

The perimeter is the sum of the lengths of all three sides of the triangle.

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 a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Front

What is the area of a right triangle with legs of 6 cm and 8 cm?

Back

Area = 1/2 × 6 cm × 8 cm = 24 cm²

Front

What is the relationship between the base and height in a triangle?

Back

The base and height are used to calculate the area of the triangle.