Find the value of the angle marked with a question mark.

Let's analyze the figure. The two angles shown are adjacent and form a straight line, which means they are supplementary angles. Supplementary angles add up to 180 degrees.

We know one angle is 58 degrees. Let the unknown angle be $$x$$. Then we can write the equation:

$$x + 58^{\circ} = 180^{\circ}$$

To find $$x$$, we subtract 58 from both sides:

$$x = 180^{\circ} - 58^{\circ}$$

$$x = 122^{\circ}$$

Therefore, the angle marked with a question mark is 122 degrees.