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example of undefined terms
Weegy: POINT (an undefined term) In geometry, a point has no dimension (actual size). Even though we represent a point with a dot, the point has no length, width, or thickness. A point is usually named with a capital letter. [ In the coordinate plane, a point is named by an ordered pair, (x,y). LINE (an undefined term) In geometry, a line has no thickness but its length extends in one dimension and goes on forever in both directions. A line is ... (More)
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Updated 6/16/2010 7:07:52 AM
1 Answer/Comment
Intuitive Concepts:

There are a few basic concepts in geometry that need to be understood, but are seldom used as reasons in a formal proof.
Collinear Points points that lie on the same line.
Coplanar points points that lie in the same plane.
Opposite rays 2 rays that lie on the same line, with a common endpoint and no other points in common. Opposite rays form a straight line and/or a straight angle (180°:).
Parallel lines two coplanar lines that do not intersect
Skew lines

two non-coplanar lines that do not intersect.


Added 6/16/2010 7:07:52 AM
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