Z=70 because ALTERNATEANGLE is FORMING angle abd=70 because of VERTICALLY opposite angle straight angle d=180-120=80 x + 70 80=180 x +150=180 x=180-150=30 x=30 external angle adb-straight angle ade=180-120=60 angle edb=dec because alternate angle is forming angle Dec =y=60 because of vertically opposite angle here's your answer x=30, y=60 and z=70.