If you mean a regular polygon with each interior angle being 172 degrees then it will have 45 sides or a 45-agon
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If one interior angle measures 172° then the corresponding exterior angle measures 180 - 172 = 8°. The number of sides = 360 ÷ 8 = 45.
20 sides because the supplement of 162 is 18. 18 is the measure of each exterior angle. the measure of all exterior angles=360. So 360/18=20.
Each interior angle of a regular 45-gon measures 172 degrees
Interior angles of a 45-gon add up to 7740 degrees Each interior angle of a regular 45-gon measures 172 degrees