## Prealgebra (7th Edition)

Published by Pearson

# Chapter 6 - Section 6.5 - Congruent and Similar Triangles - Exercise Set: 15

6

#### Work Step by Step

$\frac{12}{4}$=$\frac{18}{x}$ set cross products equal 12x=4$\times$18 12x =72 divide by 12 both sides $\frac{12x}{12}$=$\frac{72}{12}$ x=6 The missing length is 6 units

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