A polygon has 35 diagonals. How many sides does it have?
Self made Choices:	A) 10	B) 13	C) 14	D) 15	E) 16
The best way to solve this problem is to use the formula: An n sided polygon can have n*(n - 3)/2 diagonals   n*(n - 3)/2 = 35   n*(n - 3) = 70   Substitute n from the answer choices. n = 10   10nswer: 10
<result>A</result>
A polygon has 35 diagonals. How many sides does it have?
Self made