16. If p Ila, what can you say angles 1 and 2? b. Congruent Complementary c. Supplementary d. Vertical a. 17. If the measures of angles 1 and 2 are equal, then what can you say lines p and q? a. Intersecting b. Parallel c. Perpendicular d. Transversal 18. Given: plla, mz1 = m 22, for what reason? a. Alternate-Exterior Angles c. Alternate-Interior Angles b. Corresponding Angles d. Same-Side Interior Angles For numbers 19-21, refer to the figure below.​