A regular decagon;
A 20-gon with 2 lots of 10 congruent sides and angles in an alternating pattern;
A 30-gon with 3 lots of 10 congruent sides and angles in an 1-2-3-1-2-3 pattern; A 40-gon with 4 lots of 10 congruent sides and angles in an 1-2-3-4-1-2-3-4 pattern;
etc.
Chat with our AI personalities
360 ÷ 72 = 5, so that the regular polygon is a pentagon (a five-sided polygon).
Sum of exterior angles of any polygon is 360 degrees. So each being 72 degrees implies that there are 360/72 = 5 of them ie you have a regular pentagon.
If it's a regular polygon and each exterior angle measures 72 degrees then it is a pentagon which has 5 sides
360/72 ie 5 sides
5 sides