1. Learning Targets: 1.To be able to identify segments and rays 2.To recognize when lines and planes are parallel

2. Vocabulary Segment – The part of a line consisting of two endpoints and ALL the points between them. ABorsegment AB

3. Vocabulary Ray – The part of a line consisting of one endpoint and all the points of the line on the other side of the endpoint. Is AB different than BA? Yes, the rays have different endpoints.

4. Vocabulary Opposite Rays – Two COLLINEAR rays with the SAME endpoint. PA, PB are opposite rays

5. 1.) Name EF another way. 2.) Name all segments. 3.) Name all rays. 4.) Name a pair of opposite rays. 5.) Are EG, GE the same segment? Why? D E F G EG DE, DF, DG, EF, EG, FG DE, EF, FG, GF, FE, ED Yes, the segments contain the same set of points.

6. Vocabulary Parallel Lines – COPLANAR lines that do not intersect Skew Lines – NONCOPLANAR lines They ARE NOT parallel They DO NOT intersect A B D C E FG AB ||CD AD, BE

7. BC, AD FD

8. AB C D E F G H Plane ABC || Plane HEF Plane ADE || Plane BCF Plane HAB || Plane EDC