You can put this solution on YOUR website! How many triangles can be formed by connecting any 3 vertices of a regular hexagon?
There are 6 vertices on a hexagon
---
Any three non-collinear points determine a triangle.
--
# of triangles = 6C3 = 6*5*4/1*2*3 = 20
==============================
Cheers,
Stan H.
(