Question

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

Answer 1

Answer:

80 degrees is the next angle

Answer 2

By angle sum property of triangle,

<A + <B + <C = 180°

=> 20° + 80° + <C = 180°

=> 100° + <C = 180°

.°. <C = 180° - 100° = 80°