Question

please help me in this. ​

Answer 1

Step-by-step explanation:

angle acb=180-130=50(linear pair)

so, angle A+B+C=180(angle sum properties) angle A+80+50=180

A=130=180

A=180-130

A=50 ans

Answer 2

Answer:

sum of interior angles =exterior angle

80+x=130

x=130-80

x=50

sum of interior angles=180°

80+50+x=180

130+x=180

x=180-130

x=50

and in ∆ABC angleA andangle C are equal