Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
6. The Converse of the Pythagorean Theorem
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Exercise 4 Page 413

The ratio of the corresponding side lengths is equal to the ratio of the perimeters.

4

Practice makes perfect

We are given a pair of similar figures.

similar figures
The ratio of the perimeters is 2: 5. Knowing that the ratio of corresponding side lengths is the same as the ratio of the perimeters, we can write a proportion in terms of x. Be sure to keep the larger side length and the larger perimeter on the same side of the fraction bar. x/10=2/5 Let's isolate x and find its value!
x/10=2/5
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Solve for x
x=2/5(10)
x=2(10)/5
x=20/5
x=4