CPM Homework Help : CCG Problem 12-72

A quadrilateral A, D, C, B, where A, B is x and B,C is 12, and D, C is 10. This quadrilateral is connected to D, E, F, C, where C, F is 15 and E, F, is y. In the diagram at right, $ABCD \sim DCFE$ . Solve for $x$ and $y$ . Show all work.

Hint:

Set up proportions to find these lengths.

Step:

$\frac{x}{12}=\frac{10}{15}$

Answer:

$x = 8$