Area of polygons

Front

What is the formula for the area of a rectangle?

Back

A = l × w (Area = length × width)

Front

What is the formula for the area of a triangle?

Back

A = ½bh (Area = ½ × base × height)

Front

What is the formula for the area of a parallelogram?

Back

A = bh (Area = base × height)

Front

What is the formula for the area of a trapezoid?

Back

A = ½h(b₁ + b₂) (Area = ½ × height × (base1 + base2))

Front

What is the formula for the area of a circle?

Back

A = πr² (Area = Pi × radius squared)

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around a shape.

Front

How do you find the perimeter of a rectangle?

Back

P = 2l + 2w (Perimeter = 2 × length + 2 × width)

Front

How do you find the perimeter of a triangle?

Back

P = a + b + c (Perimeter = sum of all sides)

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × radius.

Front

How do you find the area of a square?

Back

A = s² (Area = side length squared)