Geometry

The Plane-Line Postulate states: "If two points lie in a plane, then the line containing them A.lies in the plane".

In Euclidean geometry, a plane is a flat, two-dimensional surface that extends infinitely far. If two points are part of a particular plane, since a line is defined by two points and the plane is a continuous flat surface, the entire line that passes through those two points must also be part of that plane.

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