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Topic: Rotating triangle on lattice points
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avd122 daga

Posts: 2
Registered: 7/9/09
Rotating triangle on lattice points
Posted: Oct 5, 2009 8:49 AM
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Say I have a traingle with vertices (0,0), (240,0), and (240,180). With I want to rotate this triangle about (0,0) so that the coordinates of the vertices remain integers. I want to count the number of such triangles which upon rotation have integer coordinates. What would be the algorithm for this?

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