A geometry problem by Rohit Kanchi
Geometry
Level
2
AB, BC and CD are the three consecutive sides of a regular polygon. If angle BAC = 15 degrees, find the number of sides (n) of the polygon.
The answer is 12.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
BAC=15° So by symmetry, BCA=15° and therefore ABC=150°
(n-2)180=150n=>n=12