1. Geometry Week #1A Section 2

2. Old Town, Sydney, Australia

3. Homework Wk #1A Section 1 Answers 1. True 2. False 3. True 4. Point P 5. Line 6. Ray 7. Ray 8. Line segment 9. Plane ABC Extra Credit: Another point.

4. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS Solve these equations. 1. 47 + x = 180 2. 135 = 3x – 6 3. 5x + 9 = 6x - 11

5. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS Solve these equations. 1. 47 + x = 180 x = 133 2. 135 = 3x – 6 3. 5x + 9 = 6x - 11

6. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS Solve these equations. 1. 47 + x = 180 x = 133 2. 135 = 3x – 6 141 = 3x x = 47 3. 5x + 9 = 6x - 11

7. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS Solve these equations. 1. 47 + x = 180 x = 133 2. 135 = 3x – 6 141 = 3x x = 47 3. 5x + 9 = 6x - 11 9 = x - 11 x = 20

8. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS 4. What is the difference between a line and a line segment? 5. What is the difference between a line and a ray?

9. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS 4. What is the difference between a line and a line segment? A line goes forever both ways. A line segment is a piece of a line with two endpoints. 5. What is the difference between a line and a ray?

10. Week #1A – Section 2 GOAL: To learn what types of lines are to be found in geometry. CA STANDARD 7.0: To know and use the properties of parallel lines. WARMUP QUESTIONS 4. What is the difference between a line and a line segment? A line goes forever both ways. A line segment is a piece of a line with two endpoints. 5. What is the difference between a line and a ray? A line goes forever both ways. A ray is half a line and has one endpoint, but goes forever in one direction.

11. Week #1A Section #2 Notes Types of Lines VOCABULARY / THE QUESTIONS 1. WHAT are the two basic types of lines? 1. Intersecting (they cross each other) 2. Non-intersecting (they will never cross each other)

12. Week #1A Section #2 Notes Types of Lines VOCABULARY / THE QUESTIONS 1. WHAT are the two basic types of lines? 1. Intersecting (they cross each other) 2. Non-intersecting (they will never cross each other) 2. WHAT are the two types of intersecting lines? 1. Perpendicular – they cross at right angles (90°) 2. Other intersecting – any other kind

13. Week #1A Section #2 Notes Types of Lines VOCABULARY / THE QUESTIONS 3. WHAT are the two types of non-intersecting lines? 1. Parallel – never touch and are in the same plane 2. Skew – never touch and are not in the same plane (see box below)

14. Week #1A Section #2 Notes Types of Lines VOCABULARY / THE QUESTIONS 3. WHAT are the two types of non-intersecting lines? 1. Parallel – never touch and are in the same plane 2. Skew – never touch and are not in the same plane (see box below) 4. Of the four types of lines, which is the ONLY kind that are never in the same plane? Skew

15. Week #1A Section #2 Notes Types of Lines VOCABULARY / THE QUESTIONS Using the picture of this box, find one example of each f the four types of lines. Intersecting: __________ A B Perpendicular: ___________ D C Parallel: __________ F H G Skew:____________

16. Vanishing Points

17. Ending Quiz Fill in the blanks with the words parallel, perpendicular, or skew. 1. Line segments CE and AC are __________. 2. Line segments EH and AB are __________. 3. Plane DBG and plane AHE are __________. D F C E B G A H