Pre-Calculus Homework Solutions 44

# Pre-Calculus Homework Solutions 44 - 42. 3x 2 4x x 90 2 90...

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Chapter 2 46 42. 3 x 1 2 1 x 5 ¬ 90 4 x 1 2 5 ¬ 90 4 x 5 ¬ 88 x 5 ¬ 22 43. x 1 3 x 5 ¬ 180 4 x 5 ¬ 180 x 5 ¬ 45 44. 26 x 1 10 x 5 ¬ 180 36 x 5 ¬ 180 x 5 ¬ 5 45. 4 x 1 10 1 3 x 2 5 5 ¬ 180 7 x 1 5 5 ¬ 180 7 x 5 ¬ 175 x 5 ¬ 25 Proving Angle Relationships Page 110 Geometry Activity: Right Angles 1. The lines are perpendicular. 2. They are congruent and they form linear pairs. 3. 90 4. They form right angles. 5. They all measure 90° and are congruent. Pages 111–112 Check for Understanding 1. Tomas; Jacob’s answer left out the part of / ABC represented by / EBF . 2. Sample Answer: If / 1 > / 2 and / 2 > / 3, then / 1 > / 3. 3. / 1 > / 2 because they are vertical angles. m / 1 5 ¬ m / 2 65 5 ¬ m / 2 4. m / 6 1 m / 8 5 ¬ 90 m / 6 1 47 5 ¬ 90 m / 6 5 ¬ 43 m / 6 1 m / 7 1 ¬ m / 8 5 ¬ 180 43 1 m / 7 1 47 5 ¬ 180 m / 7 1 90 5 ¬ 180 m / 7 5 ¬ 90 5. m / 11 1 m / 12 5 ¬ 180 x 2 4 1 2 x 2 5 5 ¬ 180 3 x 2 9 5 ¬ 180 3 x 5 ¬ 189 x 5 ¬ 63 m / 11 5 ¬ x 2 4 5 ¬ 63 2 4 or 59 m / 12 5 ¬ 2 x 2 5 5 ¬ 2(63) 2 5 or 121 6. Given: / 1 and / 2 are supplementary, / 3 and / 4 are supplementary, / 1 > / 4 Prove: / 2 > / 3 Proof: 7. Given: VX #\$ bisects / WVY , VY bisects / XVZ . Prove: / WVX > / YVZ Proof: 8. sometimes 9. sometimes 10. Given: Two angles form a linear pair. Prove: The angles are supplementary. Paragraph Proof: When two angles form a linear pair, the resulting angle is a straight angle
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## This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.

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