Perimeter and Area of Irregular Figures

Front

What is the perimeter of a shape?

Back

The perimeter is the distance around the outside of a shape.

Front

How do you calculate the perimeter of an irregular figure?

Back

To find the perimeter of an irregular figure, add the lengths of all its sides together.

Front

What is the area of a shape?

Back

The area is the amount of space inside a shape, measured in square units.

Front

How do you find the area of a rectangle?

Back

Multiply the length by the width (Area = Length x Width).

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2 x (Length + Width).

Front

If a rectangle has a length of 5 cm and a width of 3 cm, what is its area?

Back

Area = 5 cm x 3 cm = 15 cm².

Front

If a shape has sides measuring 4 cm, 6 cm, and 8 cm, what is the perimeter?

Back

Perimeter = 4 cm + 6 cm + 8 cm = 18 cm.

Front

What units are used to measure area?

Back

Area is measured in square units, such as square centimeters (cm²) or square inches (in²).

Front

What is an irregular figure?

Back

An irregular figure is a shape that does not have equal sides or angles.

Front

How do you find the missing side lengths of an irregular figure?

Back

Use the given perimeter and subtract the known side lengths to find the missing lengths.