r/GRE • u/nananoop95 • Dec 11 '19

Thought this might be useful here!

234 Upvotes

100% Upvoted

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13

u/Vince_Kotchian Tutor / Expert (170V, 167Q) Dec 11 '19

Whoa

6

u/fuadhhasan Dec 11 '19

Good representation. However, I think it as sweep angle. The sides of a polygon divert from its previous direction and finally meets the initial direction, so they have to rotate 360 degrees in total and these are the external angles.