Question

Please answer this question in detail urgently

Answer 1

Construction, extending AB on line q, to get point R on line q.
p II q, therefore, angleEAR + angleARC = 180°
SO, angleARC = 180 - 140 = 40°

angleBCR = 180° - 120° = 60°

In ∆BCR,
exterior angleABC
= angleBCR + angleBRC
= 60° + 40°
= 100°

Reflex angleABC = 360° - 100° = 260°

HENCE, answers are 100°&260° respectively