Question

quadrilateral efgh is a scaled copy of quadrilateral abcd. what is the scale factor? hint: remember to look at the corresponding sides.

Explanation:

Step1: Identify corresponding sides

Let's assume side $AD$ in quadrilateral $ABCD$ corresponds to side $EH$ in quadrilateral $EFGH$. Given $AD = 5$ and $EH=10$.

Step2: Calculate scale - factor formula

The scale factor $k$ from the original figure ($ABCD$) to the scaled - copy ($EFGH$) is given by the ratio of the lengths of corresponding sides, $k=\frac{\text{length of side in scaled copy}}{\text{length of corresponding side in original}}$.

Step3: Substitute values

Substitute the values of the lengths of the corresponding sides into the formula: $k=\frac{EH}{AD}=\frac{10}{5}=2$.

Answer:

A. 2