Question

the triangle on the right is a scaled copy of the triangle on the left. identify the scale factor. express your answer as a whole number or fraction in simplest form.

Explanation:

Step1: Recall the formula for scale factor

Scale factor = $\frac{\text{Length of side in scaled copy}}{\text{Length of corresponding side in original copy}}$

Step2: Substitute the values

Given original side length \(18\) and scaled - copy side length \(72\).
Scale factor = $\frac{72}{18}$

Step3: Simplify the fraction

$\frac{72}{18}=\frac{72\div18}{18\div18}=4$

Answer:

\(4\)