'''Coplanar''' means lying in the same [[plane]]. [[Coplanar points]] are contained in one plane. Coplanar lines are lines that are in one plane.
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'''Coplanar''' means lying in the same [[plane]]. [[Coplanar points]] are contained in one plane. Coplanar lines are lines that are in one plane. A set of up to three points must always be coplanar: the minimum number of points that can lie in different planes is four.