Pre-Calculus Homework Solutions 236

# Pre-Calculus Homework Solutions 236 - Chapter 8...

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Chapter 8 238 Chapter 8 Quadrilaterals Page 403 Getting Started 1. The angles measuring x ° and 50° are supplementary. Find x . m x 50 180 m x 130 So, x is 130. 2. x ° is the measure of the exterior angle of the triangle so its measure is the sum of the two remote interior angles or 25 20. So, x 45. 3. The measure of an internal angle of an equilateral triangle is 60. The angle measuring x ° is supplementary to one of the angles. Find x. m x 60 180 m x 120 So, x is 120. 4. The slope is given by m y x 2 2 y x 1 1 . RS : 10 1 3 4 ¬ 7 5 TS : 10 1 2 1 0 3 ¬ 1 1 0 4 ¬ 5 7 RS and TS are perpendicular since their slopes are opposite inverses. 5. The slope is given by m y x 2 2 y x 1 1 . RS : 3 8 ( 6 9) 1 2 2 1 6 TS : 8 3 2 1 0 2 12 6 RS and TS are perpendicular since their slopes are opposite inverses. 6. The slope is given by m y x 2 2 y x 1 1 . RS : 3 5 ( ( 6 1 ) ) 1 4 1 TS : 5 2 3 5 2 3 RS and TS are not perpendicular since their slopes are not opposite inverses. 7. The slope is given by m y x 2 2 y x 1 1 . RS : 3 8 ( 4 6) 4 3 TS : 8 3 2 5 6 8 3 4 RS and TS are perpendicular since their slopes are opposite inverses. 8. The slope is given by m y x 2 2 y x 1 1 . m 3 d c The slope is 3 d c . 9. The slope is given by m y x 2 2 y x 1 1 . m 0 b a 0 a b The slope is a b . 10. The slope is given by
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