Problem of the Week 1006
A Matchstick Puzzle
It is easy to use 12 matches to make a polygon of area 5:
Can you use 12 matches to make a polygon of area 4? To make it more interesting, each vertex of the polygon must be at a point with integer coordinates (where the matches have unit length).
Note: It must be a true polygon, with no crossings.
© Copyright 2004 Stan Wagon. Reproduced with permission.