Pre-Calculus Homework Solutions 78

Pre-Calculus Homework Solutions 78 - 13. consecutive...

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13. consecutive interior 14. alternate exterior 15. alternate interior 16. / 1 and / 2 are supplementary. m / 1 1 m / 2 5 ¬ 180 53 1 m / 2 5 ¬ 180 m / 2 5 ¬ 127 17. / 3 > ¬ / 6 / 6 > ¬ / 1 / 3 > ¬ / 1 m / 3 5 ¬ m / 1 m / 3 5 ¬ 53 18. m / 4 1 m / 3 5 ¬ 180 m / 4 1 53 5 ¬ 180 m / 4 5 ¬ 127 19. m / 5 1 m / 6 5 180 / 6 > ¬ / 1 m / 6 5 ¬ m / 1 m / 5 1 m / 1 5 ¬ 180 m / 5 1 53 5 ¬ 180 m / 5 5 ¬ 127 20. / 6 > ¬ / 1 m / 6 5 ¬ m / 1 m / 6 5 ¬ 53 21. m / 7 1 m / 6 5 ¬ 180 m / 7 1 53 5 ¬ 180 m / 7 5 ¬ 127 22. Find a . / 1 and / 2 are supplementary, so m / 1 1 m / 2 5 180. 3 a 1 40 1 2 a 1 25 5 ¬ 180 5 a 1 65 5 ¬ 180 5 a 5 ¬ 115 a 5 ¬ 23 Find b . / 2 > / 4 and m / 4 1 m / 3 5 180, so m / 2 1 m / 3 5 180. 2 a 1 25 1 5 b 2 26 5 ¬ 180 2(23) 1 25 1 5 b 2 26 5 ¬ 180 5 b 1 45 5 ¬ 180 5 b 5 ¬ 135 b 5 ¬ 27 23. slope of AB @ #$ 5 ¬ 5 ¬ 2 } 2 7 } slope of CD @ #$ 5 ¬ } 9 0 2 2 2 2 } 5 ¬ 2 } 7 2 } The slopes are not the same, so AB @ #$ and CD @ #$ are not parallel. The product of the slopes is
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