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Oct
13
comment What is the smallest number of $45^\circ-60^\circ-75^\circ$ triangles that a square can be divided into?
I don't understand why all the additional triangles are forced.
Oct
3
comment What is the smallest number of $45^\circ-60^\circ-75^\circ$ triangles that a square can be divided into?
Hmm, I'd almost think the prize formula is backwards: it would be much harder to find and prove a 150-triangle minimum, e.g., than 30.