Answer:
50 degrees
Explanation:
The angles of a triangle add up to 180 degrees. We would set up the equation like this:
2x+18 + 4x+11 + 55 = 180
Combine like terms:
6x + 84 = 180
Solve for x:
6x = 96
x = 16
We substitute 16 back in for x and see the measure of the smallest angle.
2(16)+18 = 50
4(16)+11 = 75
55
The smallest angle here in 50 degrees.