A.) ∠AZB and ∠BZD are a pair of supplementary angles.
B.) ∠DZB and ∠AZC are a pair of vertical angles.
C.) The value of x is 17.
D.) ∠AZC and ∠CZD are a pair of complementary angles.

A AZB and BZD are a pair of supplementary angles B DZB and AZC are a pair of vertical angles C The value of x is 17 D AZC and CZD are a pair of complementary an class=