Question

plz answer it fast plzz

Answer 1

∠ACD=50 (ANGLES IN LINEAR PAIR)

∠DAC=∠ACD=50° (OPPOSITE ANGLES OF EQUAL SIDES)

∠ADC=80° (REMAINING ANGLE)

∠ADB=100° (ANGLES IN LINEAR PAIR)

∠BAD=∠ABC=40° (OPPOSITE ANGLES OF EQUAL SIDES)

∠BAC=∠BAD+∠CAD (ANGLE ADDITION PROPERTY)

         =40°+50°

∠BAC=90°