Triangles are so much fun! If two triangles are equiangular, it means that they have matching angles, but perhaps different sizes. An isosceles triangle has two equal sides (and therefore two equal angles). A right angled triangle has a 90 degree angle. All 7 equiangular triangles in this puzzle are Isosceles right-angled triangles! Can you spot the square?

See Also:

http://en.wikipedia.org/wiki/Trianglelink to this puzzle
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