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 base of a triangle?

Back

The base is one side of the triangle, often the bottom side, used in calculating the area.

Front

What is the height of a triangle?

Back

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

Front

How do you find the perimeter of a triangle?

Back

Perimeter = sum of the lengths of all three sides.

Front

What is a right triangle?

Back

A triangle that has one angle measuring 90 degrees.

Front

What is an equilateral triangle?

Back

A triangle where all three sides are of equal length.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is a scalene triangle?

Back

A triangle where all three sides are of different lengths.

Front

If the base of a triangle is 7 units and the height is 9 units, what is the area?

Back

Area = 1/2 × 7 × 9 = 31.5 units².

Front

If a triangle has an area of 35 units² and a base of 10 units, what is the height?

Back

Height = (Area × 2) / base = (35 × 2) / 10 = 7 units.