You can
put this solution on YOUR website!M
Line 1:
Draw a diagonal from the top left corner to the bottom right corner of M.
(2 triangles formed)
Line 2:
Draw a diagonal from the top right corner to the bottom left corner of M.
(there are now 5 triangles)
Line 3:
Draw a horizontal diagonal through the middle of M (the line would hit the point in the middle of M.
(there are now 9 triangles)