If the measure of angle triangle is 120 degrees fill in all other angle measures

answer = 30

Step-by-step explanation:

considering anyone out of 3 triangles as 120

then according to traingle law,

angle A + angle B + Angle C = 180

so, lets say angle A as 120 and B and C as x.

so 120 + x + x = 180

so 120 + 2x = 180

so 2x = 180-120=60

so 2x = 60

then x = 30