## Chapter 9, Lesson 11

**9-11.A** recognize parallel and perpendicular lines

**a.** Sadie drew lines *m* and *n* each perpendicular to line *p*. What is the relationship between lines *m* and *n*?

**b.** Aaron drew lines *a* and *b* each parallel to line *c*. What is the relationship between lines *a* and *b*?

**c.** Dina drew line *h* perpendicular to line *j* and line *k* parallel to line *j*. What is the relationship between lines *h* and *k*?

**9-11.B** identify angle pairs of parallel lines**In the diagram, transversal t intersects parallel lines p and q.**

**Which statements are true?I** angle 7 is congruent to angle 4.

**II**angle 4 and angle 6 are supplementary.

**III**angle 5 is congruent to angle 1.

**(a)**I and II only

**(b)**I and III only

**(c)**II and III only

**(d)**I, II, and III