Re: Maths doubt

Posted by Noel on Apr 25, 2014; 2:01pm
URL: http://discussion-forum.276.s1.nabble.com/Maths-doubt-tp7586601p7587786.html

Q. An n-gon is a regular polygon with n equal sides.find the number of diagonals (edges of an n-gon are not considered as diagonals) of a 10-gon.
a. 20
b. 25
c. 35
d. 45