What is the measure of the x angle

X = 139°

Step-by-step explanation:

Angle MON is 41° as given in the figure

Now we know that angle MON and angle MOL lie on a straight line (Lon)

When two angles lie on a line they are called a linear pair and add up to 180° because they form a straight angle

So we can infer,

41 + x = 180 (their sum is 180)

So x = 180-41

= 139°