Answer more than 30 days after a question was asked as first answer scoring 2 or more. This badge can be awarded multiple times.
earned this badge 3 times
Awarded nov 27 '12 at 10:05
What is the smallest number of $45^\circ-60^\circ-75^\circ$ triangles that a square can be divided into?
Awarded oct 12 '11 at 17:06
Awarded sep 21 '11 at 23:05