Find the perimeter of a polygon

The perimeter of a polygon is the distance around it. To find the perimeter, add the lengths of all its sides.

Find the perimeter of the triangle below.

Find the perimeter of the quadrilateral below.

Find the perimeter of the pentagon below.

Since a square has four sides of equal length \(s\), its perimeter formula is:

\[P = 4s\]

Find the perimeter of a square whose sides are 7.5 meters long.

A Scrabble game board has a square shape with sides of length 38.5 cm. Find the perimeter of the game board.

Find the perimeter of the rectangle shown below, in inches.

Use the formula \(P = 2l + 2w\). Caution: both dimensions must be in the same unit before substituting.

Find the perimeter of the triangle shown below, in inches.

A structural truss is in the shape of an isosceles triangle. A total of 76 linear feet of lumber was used. Each of the two equal sides is 20 feet long. How long is the base of the truss?

The perimeter of an isosceles triangle is 58 meters. One of its two sides of equal length is 15 meters long. How long is its base?

Drag the correct term into each placeholder to complete both formulas and the caution rule.

Square: \(P = \) 1($) \(\times s\), where \(s\) is the length of one 2($).

Rectangle: \(P = 2 \times\) 3($) \(+ 2 \times\) 4($), where \(l\) is the length and \(w\) is the width.

Caution: All side lengths must be in the same 5($) before adding.