In XYZ, mX=90 and mY=30.In TUV, mU= 30 and mV=60. Which is true about the two triangles? XYZ=TUV, XYZ= VUT, No congruency statement can be made because only two angles in each triangle are known, No congruency statement can be made because the side length are unknown.

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