Understanding Area and Perimeter of Triangles

Front

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

Back

Area = (Base × Height) / 2

Front

What is the perimeter of a triangle?

Back

The perimeter is the distance around the triangle, calculated by adding the lengths of all three sides.

Front

Which side length is not needed when calculating the area of a triangle?

Back

The longest side.

Front

Can the order of adding side lengths affect the perimeter calculation?

Back

No, the result remains the same.

Front

How do you calculate the perimeter of a triangle with sides of lengths 10, 15, and 20?

Back

Perimeter = 10 + 15 + 20 = 45.

Front

What is the height of a triangle?

Back

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

Front

What is the base of a triangle?

Back

The base is any one of the sides of the triangle, often the one on which the triangle is considered to be standing.

Front

If a triangle has a base of 8 cm and a height of 5 cm, what is its area?

Back

Area = (8 × 5) / 2 = 20 cm².

Front

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

Back

The area is directly proportional to both the base and the height.

Front

What happens to the area of a triangle if the height is doubled?

Back

The area of the triangle also doubles.