a. Pairs of angles that have to be congruent are:
i. c and e
ii. d and a
b. The angles that are supplementary:
i. e, d and b
ii. f and a
iii. c and g
iv, a, b and c
Congruent angles are two or more angles that have equal measures. So that the congruent angles in the given diagram are:
i. c and e
ii. d are a
Supplementary angles are two or more angles that add up to 180 degrees, Such that the angles that are supplementary are:
i. e, d and b
ii. f and a
iii. c and g
iv. a, b and c