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7.5: Parts of similar Triangles

7.5: Parts of similar Triangles. p. 370-377. Th. 7-7: Proportional Perimeters. If 2 triangles are similar, then the perimeters are proportional to the measures of the corresponding sides. If AD=16, AC = 31, DC = 23, find the perimeter of Triangle ABD. RE-DRAW. Ans: 20.25 in.

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7.5: Parts of similar Triangles

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  1. 7.5: Parts of similar Triangles p. 370-377

  2. Th. 7-7: Proportional Perimeters • If 2 triangles are similar, then the perimeters are proportional to the measures of the corresponding sides If AD=16, AC = 31, DC = 23, find the perimeter of Triangle ABD RE-DRAW

  3. Ans: 20.25 in

  4. Th. 7-8,7-9,7-10: Median, Altitude, Angle Bisector with similar Triangles • If 2 triangles are similar, then the measures of the corresponding are proportional to the measures of the corresponding sides PQ UV

  5. Example Solve for X

  6. Th. 7-11: Angle Bisectors • An angle bisector in a triangle separates the opposite sideinto segments that have the same ratio as the other 2 sides.(all within 1 triangle) Solve for x:

  7. Example • At a certain time of day, Lisa’s shadow is 8 ft long. Lisa is 5 ft. 6 in. tall, and the oak tree is 44 ft tall. If Lisa stands in the shadow of the tree so that the end of her shadow coincides with the end of the tree’s shadow, how far fro the tree with Lisa be standing?

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