 Segments, Rays, and Parallel Lines.  Segment : is part of a line that has a beginning point and an endpoint.  Written notation. A B.

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Presentation transcript:

 Segments, Rays, and Parallel Lines

 Segment : is part of a line that has a beginning point and an endpoint.  Written notation. A B

 A ray is the part of a line that has a beginning point and goes through another point without end, in that direction.  Written notation. A BD C AB CD

 Opposite rays are two collinear rays with the same beginning point. (line)  Written notation. B A C AB, AC

 Parallel lines are coplanar lines that do not intersect. A B C D

 Skew lines do not lie in the same plane, are not parallel, and do not intersect. ABAB S T

 Parallel planes are planes that do not intersect. P S Plane P is parallel to plane S

 AB and AD ______  AB and ST are  AB and RS are  Plane ADR and BCS  Plane RCS and ABC  Intersect at point A  Skew lines  Parallel lines  Parallel planes  Intersect along the line DC.

 Is CB parallel to GF ?  Is plane AED parallel to plane FGH ?  Are AB and HG skew lines ? B A E D C H I J F G No Yes