1. CHAPTER 3: PARALLEL LINES AND PLANES 3-1: DEFINITIONS PIB GEOMETRY

2. 3-1 WARM UP: DRAW A PICTURE. HOW MANY DIFFERENT WAYS COULD… 1.Two lines not intersect? 2.Two planes not intersect? 3.A line and a plane not intersect?

3. LINES Two lines that do not intersect are either skew or parallel

4. LINES AND PLANES Can two planes be parallel? Can a line and a plane be parallel?

5. NAMES OF ANGLES Interior angles: Exterior angles: Corresponding Angles: Alternate Interior Angles: Same-Side Interior Angles:

6. EXAMPLES

8. WORKSHEET

9. HOMEWORK 3-1 p. 76: #13-19 odd, 31-39 odd, 14, 32