Question

in fig 4 ABCD is a parallelogram in which angle ADC=60° and angle ACB=70°.find the measures of angle DCB,angle CAB,angle DAC( isske answers hai 120,50,70)

Answer 1

CAB=70° (alternate angles are equal)
CAB+ADC+DCA=180° (sum of the angles of a triangle is 180°)
70°+60°+DCA=180°
130° +DCA=180°
DCA=180°-130°
DCA=50°
DCA+ACB=50°+70°

DCB=120°