Question

what is the sum of the external angles of a polygon?

Answer 1

If you walk around, it's a circle, so 360 degrees?

Answer 2

Um... maybe it has to be convex....

Answer 3

Yeah, otherwise you could theoretically just go on and on....

Answer 4

lol - never thought of it that way! yes it has to be convex.
the reason i asked this was that i was answering a question about interior angles of a polygon, and used the exterior angles to work it out. then someone wrote this was totally wrong - he was defining the external angles to mean the total reflex angles.

Answer 5

he quoted (Zwillinger 1995, p. 270).

Answer 6

perhaps this is a' US thing'