If 10.3/5 = x/3.2 then which of these values is closest to the value of x? a 2 b 5 c 7 d 16

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.