1. Key Concepts: Parallel and Skew Lines
CCSS
Then/Now
New Vocabulary
Key Concepts: Parallel and Skew Lines
Example 1: Real-World Example: Identify Parallel and Skew Relationships
Key Concepts: Transversal Angle Pair Relationships
Example 2: Classify Angle Pair Relationships
Lesson Menu

2. Mathematical Practices
Content Standards
G.CO.1 Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
Mathematical Practices
1 Make sense of problems and persevere in solving them.
3 Construct viable arguments and critique the reasoning of others.
CCSS

3. 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.
Then/Now

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

5. Concept

6. A. Name all segments parallel to BC.
Identify Parallel and Skew Relationships
A. Name all segments parallel to BC.
Answer:
Example 1

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

8. B. Name a segment skew to EH.
Identify Parallel and Skew Relationships
B. Name a segment skew to EH.
Answer:
Example 1

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

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

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

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

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

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

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

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

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

18. Concept

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

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

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

22. Answer: alternate exterior
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
Example 2

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

24. Answer: consecutive interior
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
Example 2

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

26. Answer: alternate interior
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
Example 2

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

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

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

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

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

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

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

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