Question

Which of these angles are supplementary?

A. 100o and 90o

B. 78o and 102o

C. 54o and 146o

D. 12o and 78o

Answer 1

B. 78o and 102o

Explanation:

Supplementary angles add to 180 degrees

A. 100o and 90o

100+90 = 190 NO

B. 78o and 102o

78+102 = 180 YES

C. 54o and 146o

54+ 146 = 200 NO

D. 12o and 78o

12+ 78 90 NO These are complementary