## Chapter 13, Lesson 12

**13-12.A** find horizontal and vertical distances on the coordinate plane

**Find the length of each line segment.**

**a.** *AB* with endpoints at *A*(—9, 4) and *B*(3, 4)

**b.** *PQ* with endpoints at *P*(7, —6) and *Q*(7, 5)

**13-12.B** understand scale factor

**Brian drew a right triangle with sides that measure 3 in., 4 in., and 5 in. Using a scale factor of 3, Dina drew a right triangle similar to Brian's. What is the perimeter of the triangle Dina drew?**

**13-12.C** use the area formula for triangles

**Find the area of triangle ABC.**