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 Related Terms
 Collinear:  Points are collinear if they lie on the same straight line.
Line: One of the basic undefined terms of geometry. A line has no thickness but its length goes on forever in two directions.
Point: One of the basic undefined terms of geometry. A point has no length, width, or thickness, and we often use a dot to represent it.
Graph of a Linear Equation: The graph of all solutions of a linear equation, resulting in a straight line.