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Pre-Calculus Homework Solutions 177

# Pre-Calculus Homework Solutions 177 - 38 Sample answer The...

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38. Sample answer: The geometry occurs inside the camera as the image is formed on the film. Answers should include the following. • The triangles are similar because the SAS Similarity Theorem holds. The congruent angles are the vertical angles and the corresponding sides are the congruent sides of the isosceles triangles. 39. Let x represent DF . D AC F ¬ D AB E 10 x .5 ¬ 6 8 .5 84 ¬ 6.5 x 12.9 ¬ x 40. B; let x be one of the two numbers that are the same. Then x x 3 x 180, so 5 x 180 or x 36. So, the numbers are 36, 36, and 108. The answer is B. Page 323 Maintain Your Skills 41. LO LM MO 14 7 MO 7 MO LP LN NP 16 9 NP 7 NP In order to show MN OP , we must show that M LM O L N N P . M LM O 7 7 or 1. L N N P 9 7 . Since M LM O L N N P , the sides are not proportional and MN is not parallel to OP . 42. There is not enough information given to determine whether MN is parallel to OP . 43. In order to show MN OP , we must show that M LM O L N N P .
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