SOLUTION: Can you help me with this homework question? Here it is: True or False? If a polygon has 20 sides, then it will have less than 100 diagonals.

Algebra ->  Polygons -> SOLUTION: Can you help me with this homework question? Here it is: True or False? If a polygon has 20 sides, then it will have less than 100 diagonals.      Log On


   



Question 350347: Can you help me with this homework question?
Here it is: True or False? If a polygon has 20 sides, then it will have less than 100 diagonals.

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Number of distinct diagonals formula: n(n-3)/2
20(20-3)/2
20*17/2
340/2
=170 it will have more than 100 diagonals.
.
Ed