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collinear
01
having points that lie on the same straight line
collinear
adj
Example
The three points are collinear, forming a straight line on the graph.
If the slopes between pairs of points are equal, then the points are collinear.
The architect ensured that the columns in the design were collinear for aesthetic balance.
The stars appeared collinear in the night sky, forming a straight pattern.
In geometry, proving that points are collinear can simplify many problems.