Given the diagram below, Gitta writes mZ1 + m 2 + m/3 = 180°. Which of
the following reasons allows her to write this statement?
O
A. Exterior angles theorem
O
B. Triangle sum theorem
O
C. Subtraction property of equality
O
D. Definition of linear pair

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