Collinear points
From Latin: co- "together" , -linearis "belonging to a line,"
Definition: A set of points that lie in a straight line
Obviously two points are always collinear, since a straight line can always be drawn through two points.
Sometimes it is spelled 'colinear' (with one L).
The collinearity of a set of points (testing if they are collinear or not) can be determined using coordinate geometry.
Word Usage
We say that "point Q is collinear with points P and S". Or put another way, "the points P, Q, R and S are collinear".
Try thisTry this
Move any of the points around with the mouse. The others will move by themselves so they all remain collinear.
(If there is no image below, see support page.)
Related point topics
(C) 2007 Copyright John Page
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