Use their slopes to determine if two lines are parallel or perpendicular. The lines are parallel. The slopes are equal. 90°; the lines are perpendicular. - __1 parallel –1 Module 19 975 Lesson 5 19.5 Equations of Parallel and Perpendicular Lines Essential Question:How can you find the equation of a line that is parallel or perpendicular to a given line? DO NOT EDIT--Changes must be made through "File info"

Title: DA2CA_CL_951_10 Author: sarlen Created Date: 1/3/2008 11:10:51 AM

## Core c6 state

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