Asked by JdS

what is the formula for the area of a regular polygon?
Answered by Damon
A =(1/4) n a^2 ctn (180/n)
A is area
a is length of side
n is number of sides
ctn is cotangent
Answered by Anonymous
if the angle of a regular polygon is 20 degrees how many sides does the ploygon have? 18 sides, but show your work
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