1) If x/2, x/3, and x/6 are angle measures of a triangle, they must add up to 180.
x/2 + x/3 + x/6 = 180
Find the common denominator:
3x/6+2x/6 + x/6 = 180
Multiply both sides by 6:
3x+2x+x=1080
6x=1080,
x = 180
x/6, the smallest angle, is 30.
2) Correct me if I'm wrong, but isn't it just 135?
3) 108/120 = 9/10