by stupidityismygam » Sat Mar 28, 2009 9:40 am
Consider the set of all triangles [unparseable or potentially dangerous latex formula] where [unparseable or potentially dangerous latex formula] is the origin and [unparseable or potentially dangerous latex formula] and [unparseable or potentially dangerous latex formula] are distinct points in the plane with nonnegative integer coordinates [unparseable or potentially dangerous latex formula] such that [unparseable or potentially dangerous latex formula] Find the number of such distinct triangles whose area is a positive integer.
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tytia