The measure of the angle x which is the smallest angle is 20 degrees
To determine the value of x, we have to know the following;
- Angles on a straight line is 180 degrees
- Alternating angles are equal
- Corresponding angles are equal
Then, we have that;
90 + x + 40 + 30 = 180
Now, we have to collect the like terms, we get;
x = 180 - 160
Subtract the values, we get;
x = 20 degrees