1. TOMORROW: WE WILL HAVE CLASS IN ROOM 1106

2. Then/Now You used angle and line segment relationships to prove theorems. Identify relationships between two lines or two planes. Name angle pairs formed by parallel lines and transversals.

3. Vocabulary parallel lines skew lines parallel planes transversal interior angles exterior angles consecutive interior angles alternate interior angles alternate exterior angles corresponding angles

4. Concept

5. Example 1 Identify Parallel and Skew Relationships Answer: AD, EH, FG A. Name all segments parallel to BC.

6. Example 1 Identify Parallel and Skew Relationships B. Name a segment skew to EH. Answer: AB, CD, BG, or CF

7. C. Name a plane parallel to plane ABG. Example 1 Identify Parallel and Skew Relationships Answer: plane CDE

8. Example 1a A.plane WTZ B.plane SYZ C.plane WXY D.plane QRX A.Name a plane that is parallel to plane RST.

9. Example 1b B.Name a segment that intersects YZ. A.XY B.WX C.QW D.RS

10. Example 1c C.Name a segment that is parallel to RX. A.ZW B.TZ C.QR D.ST

12. Concept

13. Example 2 Classify Angle Pair Relationships A. Classify the relationship between  2 and  6 as alternate interior, alternate exterior, corresponding, or consecutive interior angles. Answer: corresponding

14. Example 2 Classify Angle Pair Relationships B. Classify the relationship between  1 and  7 as alternate interior, alternate exterior, corresponding, or consecutive interior angles. Answer: alternate exterior

15. Example 2 Classify Angle Pair Relationships C. Classify the relationship between  3 and  8 as alternate interior, alternate exterior, corresponding, or consecutive interior angles. Answer: consecutive interior

16. Example 2 Classify Angle Pair Relationships D. Classify the relationship between  3 and  5 as alternate interior, alternate exterior, corresponding, or consecutive interior angles. Answer: alternate interior

17. Example 2a A.alternate interior B.alternate exterior C.corresponding D.consecutive interior A. Classify the relationship between  4 and  5.

18. Example 2b A.alternate interior B.alternate exterior C.corresponding D.consecutive interior B. Classify the relationship between  7 and  9.

19. Example 2c A.alternate interior B.alternate exterior C.corresponding D.consecutive interior C. Classify the relationship between  4 and  7.

20. Example 2d A.alternate interior B.alternate exterior C.corresponding D.consecutive interior D. Classify the relationship between  2 and  11.

21. HW Pages 175 – 176 #1 - #30 ALL