Perimeter formulasHere, find the perimeter formulas for some regular polygonsA regular polygon is a polygon with equal sides and equal angles. If we let s be the length of one sides, we can find the perimeter as demonstrated in this lesson Equilateral triangle: Perimeter = s + s + s Perimeter = 3 × s For example, if s = 4 inches, Perimeter = 3 × 4 = 12 inches Rhombus: Perimeter = s + s + s + s Perimeter = 4 × s For example, if s = 5 meters, Perimeter = 4 × 5 = 20 meters Square: Perimeter = s + s + s + s Perimeter = 4 × s For example, if s = 6 meters, Perimeter = 4 × 6 = 24 meters Regular pentagon: Perimeter = s + s + s + s + s Perimeter = 5 × s For example, if s = 8 feet, Perimeter = 5 × 8 = 40 feet Regular hexagon: Perimeter = s + s + s + s + s + s Perimeter = 6 × s For example, if s = 5 feet, Perimeter = 6 × 5 = 30 feet See also Volume formulas 




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