Question

Quadrilateral CDEF is dilated by a scale factor of į to form quadrilateral C'D'E'F'.
What is the measure of side EF?

Answer 1

Answer:

Measure of E'F' = 9

Step-by-step explanation:

If a quadrilateral is dilated by a scale factor of $\frac{3}{4}$, all the sides of preimage CDEF will be dilated with the same factor to form image quadrilateral C'D'E'F'.

Scale factor = $\frac{\text{Dimension of image}}{\text{Dimension of preimage}}$

$\frac{3}{4}=\frac{E'F'}{EF}$

$\frac{3}{4}=\frac{E'F'}{12}$

E'F' = $\frac{3}{4}\times 12$

      = 9

Therefore, measure of side E'F' will be 9.