# 1.3 - Chapter 1.3 POINTS LINES AND PLANES Lines Points...

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Chapter 1.3 POINTS , LINES AND PLANES

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SPACE (THE SET OF ALL POINTS) Points Lines Planes
POINT a location in space has no size Name a point with a capital letter and represent it with a dot ● A (point A)

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LINE Straight path of points No thickness Extends infinitely in opposite directions A B t Name this: line AB, AB or line . t t
COLLINEAR 3 or more points on a line. A C B

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Noncollinear points do not form a line. A C B
Are points A(2,4), B(5,4) and C(5,-2) collinear? A C B (5,6) (-3,4) Name points that will make collinear lines.

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PLANE flat surface / no thickness infinite # of points and lines extends without end
PLANE any 3 noncollinear points always make a plane R . S . T . D . O . T . Postulate 1- 4

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NAME A PLANE Use: a capital letter or at least 3 of its noncollinear points. R . S . T . X Plane

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1.3 - Chapter 1.3 POINTS LINES AND PLANES Lines Points...

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