Pre-Calculus Homework Solutions 154

# Pre-Calculus Homework Solutions 154 - 8 Write proportions...

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8. Write proportions for finding side measures. 5 4 x 5 ¬ 60 x 5 ¬ 15 5 4 y 5 ¬ 40 y 5 ¬ 10 The new length is 15 cm, and the new height is 10 cm. 9. Write proportions for finding side measures. 5 5 x 5 15 } 5 y } 5 5 y 5 25 5 5 z 5 20 The new side lengths are 15 m, 25 m, and 20 m, so the perimeter is 15 m 1 25 m 1 20 m 5 60 m. 10. See students’ drawings. The drawings will be similar since the measures of the corresponding sides will be proportional and the corresponding angles will be congruent. Pages 293–297 Practice and Apply 11. / BCF > / DCF , / ABC > / EDC , / BAF > / DEF , and / AFC > / EFC ; B w C w > D w C w , A w B w > E w D w ; A w F w > E w F w , and C w F w > C w F w . Therefore, ABCF is similar to EDCF since they are congruent. 12. / 1 > / 2 > / 3 > 4; / 6 > / 5 because if two angles of one triangle are congruent to two angles of a second triangle, then the third angles are congruent. X w Y w > X w W w > X w Z w , and Y w W w > W w Z w , so the ratio of the corresponding sides is 1. Therefore,
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