Which statements about the figure are true? Select all that apply.
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.

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit