The first day of a football game resulted in a loss of 12 1/2 yards. then a penalty resulted in another loss of 5 yards. what is the total loss or gain?

M∠abc=138° and m∠def=31° . which statement is true about ∠abc and ∠def ? a: the angles are neither complementary nor supplementary. b: the angles are complementary. c: the angles are supplementary.