http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines
CHAPTER
3 Parallel and Perpendicular Lines
Chapter Outline
3.1 Parallel and Skew Lines
3.2 PERPENDICULARLINES
3.3 CORRESPONDINGANGLES
3.4 ALTERNATEINTERIORANGLES
3.5 ALTERNATEEXTERIORANGLES
3.6 SAMESIDEINTERIORANGLES
3.7 SLOPE IN THECOORDINATEPLANE
3.8 PARALLELLINES IN THECOORDINATEPLANE
3.9 PERPENDICULARLINES IN THECOORDINATEPLANE
3.10 DISTANCEFORMULA IN THECOORDINATEPLANE
3.11 DISTANCEBETWEENPARALLELLINES
Introduction
In this chapter, you will explore the different relationships formed by parallel and perpendicular lines and planes.
Different angle relationships will also be explored and what happens to these angles when lines are parallel. You
will continue to use proofs, to prove that lines are parallel or perpendicular. There will also be a review of equations
of lines and slopes and how we show algebraically that lines are parallel and perpendicular.