### Home > CC3 > Chapter 10 > Lesson 10.1.5 > Problem10-69

10-69.
1. First decide if the triangles below are similar. Then, if they are similar, use the information in each diagram to solve for x. Homework Help ✎

1. Careful!

If only two pair of corresponding sides have equal ratios, can you conclude that the triangles are similar?

The two triangles are similar (by AA~).

Draw two separate triangles, then write a proportion and solve for x.

$\frac{12}{7}=\frac{16}{x}$