### Home > GC > Chapter 7 > Lesson 7.1.1 > Problem 7-6

7-6.

Δ *ABC*and Δ*DEF*at right.Homework Help ✎Assume the triangles are not drawn to scale. Using the information provided in each diagram, write a mathematical statement describing the relationship between the two triangles.

**Justify**your conclusion.Find

*AC*and*DF*.

Use the Triangle Angle Sum Theorem to find the unknown angle in each triangle.

This will help you determine the relationship between the two triangles.

The corresponding sides of similar triangles will all have equal ratios to one another.