Question

B) Two angles of a triangle are 30° and 80°. Find the third angle.​

Answer 1

Answer:

70°

Step-by-step explanation:

Angle 1= 30°

Angle 2= 80°

Angle 3=? (assume it to be 'x')

Sum of all angles in triangle= 180°

30+80+x=180

110+x=180

x=180-110

x=70°

Answer 2

Angle 1 = 30°

Angle 2 = 80°

Angle 3 = x

sum of all angles in triangle = 180°

30-80+x= 180°

110+x = 180

x = 180-110

x = 70°