Answer:
x = 111°
Step-by-step explanation:
Angles in a triangle add up to 180
180 - (29+82) = 69
Angles on a straight line add up to 180
180 - 69 = 111
111°
the sum of the outer angles of a triangle is alway 180
so 180-82-29= 69°
180-69= 111°
