How many triangles at most can you make using six matchsticks?

Details and Assumptions:

A matchstick is assumed to be a unit segment. You cannot break the matchsticks.
The triangles don't necessarily have the same size, but they may not be degenerate.
Vertices of triangles must be intersections of matchsticks.

• 120
  6C3=120
• 5 years agoHelpfull: Yes(0) No(0)