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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

Chapter Review

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Exercise 37 Page 95

The ratio between corresponding side lengths is always the same.

9

Practice makes perfect

We are given a pair of similar figures.

similar figures

For similar figures, the ratio between corresponding side lengths is always the same. With this information in mind, we can write a proportion in terms of x. x/6=6/4 We can now isolate x in this equation and find its value.

x/6=6/4

▼

Solve for x

LHS * 6=RHS* 6

x=6/4(6)

MoveRightFacToNum

a/c* b = a* b/c

x=6(6)/4

Multiply

x=36/4

Calculate quotient

x=9

Subchapter links

1 Translations p.91

2 Reflections p.92

3 Rotations p.92-93

4 Congruent Figures p.93

5 Dilations p.94

6 Similar Figures p.94-95

7 Perimeters and Areas of Similar Figures p.95