Finding Perimeter of a Figure

Definition: A perimeter is the distance around the outside of a two dimensional figure. It is found by taking the sum of the side lengths.

If the side lengths of a quadrilateral are A, B, C and D,
Perimeter = A + B + C + D


Example: Find the perimeter of the rectangle:



We know perimeter is the sum of a figure’s sides, and that rectangles have two pairs of equal sides.

Step 1: Write an equation to find the perimeter based on the properties of rectangles.
Perimeter = 5 + 5 + 2 + 2

Step 2: Solve to find the perimeter of the figure.
Perimeter = 14

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