Answer:
Question 1: they are vertically opposite angles
Question 2:they are supplementary angles
Question 3:they are vertically opposite angles
Question 4:they are complementary angles
Step-by-step explanation:
Question 1:
a° and b° are vertically opposite angles so they are equal
Question 2:
a° and b° are supplementary angles,since their sum is equal to 180°
Question 3:
a° and b° are vertically opposite angles so they are equal
Question 4:
a and b are complementary angles,their sum is equal to 90°
