Angle aob and angle aoc are complementary angles. what is the measure of angle aob if the measure of angle aoc is 37°? a. 53° b. 323° c. 143° d. 63°

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

the first domain and range set to the left is matched with the top relation, and the second set the set in the middle goes with the bottom relation.