

circle = 2πr  where π = 3.14 and r = the radius 
triangle = a + b + c  a, b, and c are the sides 
square = 4 x L  L is the length of a side 
rectangle = 2 x L + 2 x W  L = length and W = width 
general polygon = L1 + L2 + L3 + ….+ Ln  L = length, n = number of sides 
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