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1-1a

(over Chapter 3). 1-1a. Slide 1 of 1. (over Chapter 3). 1-1b. Slide 1 of 1. Parallels. § 4.1 Parallel Lines and Planes. § 4.2 Parallel Lines and Transversals. § 4.3 Transversals and Corresponding Angles. § 4.4 Proving Lines Parallel. § 4.5 Slope.

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1-1a

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  1. (over Chapter 3) 1-1a Slide 1 of 1

  2. (over Chapter 3) 1-1b Slide 1 of 1

  3. Parallels • § 4.1 Parallel Lines and Planes • § 4.2 Parallel Lines and Transversals • § 4.3 Transversals and Corresponding Angles • § 4.4 Proving Lines Parallel • § 4.5 Slope • § 4.6 Equations of Lines

  4. Parallel Lines and Planes What You'll Learn You will learn to describe relationships among lines, parts of lines, and planes. In geometry, two lines in a plane that are always the same distance apart are ____________. parallel lines No two parallel lines intersect, no matter how far you extend them.

  5. Parallel Lines and Planes intersect

  6. Q R Parallel Lines and Planes S P K L M J Planes can also be parallel. The shelves of a bookcase are examples of parts of planes. The shelves are the same distance apart at all points, and do not appear to intersect. parallel They are _______. parallel planes In geometry, planes that do not intersect are called _____________. Plane PSR || plane JML Plane JPQ || plane MLR Plane PJM || plane QRL

  7. Parallel Lines and Planes Sometimes lines that do not intersect are not in the same plane. These lines are called __________. skew lines

  8. 2) All segments that intersect B C A D 3) All segments parallel to 4) All segments skew to Parallel Lines and Planes F G DH, CG, FG, EH AB, GH, EF AD, CD, GH, AH, EH E H Name the parts of the figure: 1) All planes parallel to plane ABF Plane DCG

  9. End of Section 4.1

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