Question

pls tell with full explanation ​

Answer 1

Angle MAD = angle ADC ( alternate angles are equal )

" 110° = 110°

Opposite angles quadrilateral = 180°

Angle ABC + Angle ADC = 180°

= ABC + 110° = 180°

or, ABC = 180° - 110°

or, ABC = 70°

So, Angle ABC = Angle BCN ( Alternate angles are equal)

ABC = BCN

70° = 70°

Here, Angle BCN is 70°