Perimeter

PERIMETER• The distance around a figure (polygon).• The perimeter of any polygon can be found by adding the measures of the sides of the polygon, if they are given in the same unit.• When you find the perimeter of a figure, the length and the width must be in the same units. 1. If the dimensions of a figure are in inches, the perimeter will be in inches. 2. If the dimensions of a figure are in centimeters, the perimeter will be in centimeters. 3. If the dimensions of a figure are in feet, the perimeter will be in feet.• Finding the perimeter of any polygon is based on addition of measures.• The perimeter of some polygons can be expressed by a formula. 1. PERIMETER OF A RECTANGLE: Perimeter = 2 x Length + 2 x Width  or  P = 2 x L + 2 x W or P = 2 x (L + W)

2. PERIMETER OF A SQUARE: Perimeter = 4 x length of one side  or  P = S + S + S + S or P = 4S 3. PERIMETER OF A TRIANGLE: Perimeter = Side + Side + Side or P = S + S + S

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