unit 1 part 2
Post on 06-Jan-2016
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Segments, Rays, and Parallel Lines
Segment : is part of a line that has a beginning point and an endpoint.
Written notation.
A B
AB
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 B D 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.
A
BS
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
JF
G
No
Yes
Yes
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