Find the number of sides of a regular convex polygon whose
angle
is 40degrees.

Answer Posted / jjjj

If it's the internal angle, then the external angle is 180-40 = 140 and 140n = 360 => no solution since n must be an integer.

If it's the external angle, then 40n = 360 => n = 9 so the number of sides is 9
...

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