Question 621338
Square, triangle, and sphere are three geometric figures in non-Euclidean Geometry.<P>
The basic difference between Euclidean and Non-Euclidean geometry is:  In Euclidean geometry any point (p) not on a line (l) has exactly one line through it that is parallel to l, while in Non-Euclidean geometry there are either infinite or no lines through p parallel to l.
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