= Circular points at infinity
{wiki=Circular_points_at_infinity}
Circular points at infinity are a concept from projective geometry, particularly relating to the projective plane and the study of lines and conics. In the context of projective geometry, the idea is to extend the usual Euclidean plane by adding "points at infinity," which allows us to treat parallel lines as if they meet at a point. In the case of conics, specifically circles, there are two points at infinity that are referred to as the "circular points at infinity.
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