Question

each pair of figures is similar. find the missing side. 1) 12 20

Explanation:

Step1: Set up proportion

Since the triangles are similar, the ratios of corresponding sides are equal. Let the ratio of the known - side pairs be $\frac{12}{3}=\frac{20}{x}$.

Step2: Cross - multiply

We get $12x = 3\times20$.

Step3: Solve for $x$

First, calculate $3\times20 = 60$. Then, $x=\frac{60}{12}=5$.

Answer:

$x = 5$