- Whatis the slopeof theselines?How do you know?
 - Whatis the slopeof a line perpendicularto theselines?How do you know?
 - Drawthe line perpendicularto that passesthroughthe -intercept,(0, 4).
 - Wheredoesthat line intersect
 - Find the distancebetween and the pointyou foundin 11. This is the distancebetweenthe two
lines. - Now solveone on your own:Find the distancebetween and
 
Answers
- [Diff: 1]. The conversetheoremwith perpendiculartransversals[Diff: 3].
 - [Diff: 1]. This angleis a verticalanglewith a right angle[Diff: 2].
 - [Diff: 1]. It is an alternateexterioranglewith [Diff: 3].
 - [Diff: 1]. is the complementof [Diff: 2].
 - [Diff: 2]. Use the angleadditionpostulate: and [Diff: 3].
 - A [Diff: 2].