6 terms

Vocabulary for Chapter 1 Section 3 (Prentice Hall)

segment

part of a line consisting of two endpoints and all points between them

ray

part of a line consisting of one endpoint and all the points of the line on one side of the endpoint

opposite rays

two collinear rays with the same endpoint (always form a line)

parallel lines

coplanar lines that do not intersect

skew lines

noncoplanar lines (not parallel and do not intersect)

parallel planes

planes that do not intersect