Question

find third angle of triangle if angle a is 20 degree and angle b is 80 degree​

Answer 1

Answer:

80° is third angle

Step-by-step explanation:

please mark it brainliest

Answer 2

let the 3rd angle c be x

Now,

a+b+c = 180°

20° + 80° + c = 180°

100° + c = 180°

c = 180° - 100°

c = 80°