Carnegie 1.1. Point, Line, Plane. Three Undefined Terms. Point Line Plane These three terms are called undefined terms; we can only describe and create mathematical models to represent them. Point.
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Point, Line, Plane
These three terms are called undefined terms; we can only describe and create
mathematical models to represent them.
points. A line has an infinite length, but no width. Arrowheads are used to indicate
that a line extends infinitely in opposite directions.
AB and is read as “line AB.”
Collinear points are points that are located on the same line.
AB and is read as “ray AB.”
length. Congruent line segments are two or more line segments of equal measure.