Question

find the value of unkown agle x

Answer 1

since
Exterior angle C + Interior angle C =180°,

then

110° + Interior angle C =180°,

then

Interior angle C=180°-110°,

=70°,


Now in ∆ABC, by Exterior angle property

Exterior angle B = Interior angle A + Interior angle C,

4x=2x+70°,

4x-2x=70°,

2x=70°,

then

x=35°,