Perimeter Formulas

Which formula could be used to find the perimeter of a regular pentagon?

• P = 2l + 2s

• P = 5 x 8

• P = 5s

• P = 7s

Which formulas could be used to find the perimeter of a rectangle?

• P = 2l + 2s

• P = 4s

• P = l + l + s + s

• P = s + s + s + s

Which formulas could be used to calculate the perimeter of a parallelogram?

• P = 4s

• P = l + l + s + s

• P = 2l + 2s

• P = 6s

Which formulas could be used to calculate the perimeter of a square?

• P = 8s

• P = s + s + s + s

• P = 2l + 2s

• P = 4s

What is Perimeter?

• The amount of space inside a shape

• The distance around the shape

• The amount of space inside a shape divided by two

• Half the distance around a shape

The Perimeter of any shape can be found by?

• Multiplying two sides together

• Adding two sides together

• There is no universal way to find perimeter

• Adding all of the side lengths together

Which formulas could be used to calculate the perimeter of this hexagon?

• P = 4s + 2l

• P = 6s

• P = s + s + s + s + s + s

• P = s + s + s + s + l + l

Which formulas could be used to calculate the perimeter of a trapezoid?

• P = s + s + t + b

• P = 2s + t + b

• P = 4s

• P = s + s + s + s

Which formulas could be used to calculate the perimeter of an isosceles triangle?

• P = 3s

• P= s + s + s

• P = 2s + l

• P = s + s + l

Which formulas could you use to calculate the perimeter of a regular octagon?

• P = 8s

• P = 4s

• P = s + s + s + s + s + s + s + s

• P = 2l + 2s