Use the shapes to answer the questions below about perimeter.

A square is a regular polygon with equal side lengths.

What is the length of side E on the square?

Perimeter is the measure in length of the outside of a shape.

The perimeter of a shape is the sum (total) of all its side lengths. P = Sum of All Sides

What is the total perimeter of the square?

An equilateral triangle has equal angles and its sides are equal in length.

What is the length of side F on the triangle?

What is the perimeter of the triangle?

A hexagon has 6 equal side lengths.

What is the length of side D on the hexagon?

To find the perimeter of the hexagon, we can add 5 + 5 + 5 + 5 + 5 + 5 or multiply 5 times 5.

Which shape has a larger perimeter? The hexagon or the square?

What is the length of side C on the shape that resembles an upper case C?

To find the length of side B on the first shape, we need to subtract 4 from 10. Or say B = 10-4.

What is the length of side A in the first shape?

What is the total perimeter of the object that looks like an upper case C?

What is the total perimeter of the first shape that has side lengths A, B, 4, 4, 12, and 10?

The sum of all of the perimeters of the irregular polygons is greater than the sum of the perimeters of the regular polygons.