Question

scale factor =

Explanation:

Identify corresponding sides

Using the Scale Factor knowledge point

$$ \text{Side}_{\text{large}} = 12 \implies \text{Side}_{\text{small}} = 3 $$

Calculate the scale factor

Using the Scale Factor knowledge point

$$ k = \frac{\text{Side}_{\text{small}}}{\text{Side}_{\text{large}}} = \frac{3}{12} = \frac{1}{4} $$

Answer:

Scale Factor = <blank>\(\frac{1}{4}\)</blank>