Question

two angles of a triangle are 30 degree and 80 degree find the third angle

Answer 1

Sum of the angles in a triangle is 180
Let the third angle be x
30+80+x=180
110+x=180
x=180-110
x=70
Third angle is 70

Answer 2

the third angle of triangle is
80x +30x+x =180
110x+x=180
x=180-110
x=70
the third angle of triangle is 70 degree