This image shows a right triangle with a given angle of 64° and another angle labeled $x^\circ$. Since the sum of the interior angles of any triangle is always 180°, we can use that fact to determine the value of $x$.

In a right triangle, one of the angles is always 90°, so:

$x + 64^\circ + 90^\circ = 180^\circ$

Simplifying:

$x + 154^\circ = 180^\circ$

Solving for $x$:

$x = 180^\circ - 154^\circ = 26^\circ$

So, the value of $x$ is $26^\circ$.

Let me know if you would like any further details or explanations! Here are some related questions to think about:

1. How would the calculation change if one of the other angles was unknown instead of $x$?
2. Can you explain why the sum of the angles in a triangle always equals 180°?
3. What would be the sum of the angles if this were not a right triangle?
4. How does the Pythagorean theorem apply to right triangles like this one?
5. How can you classify this triangle based on its angles?

Tip: Always remember that in any triangle, the sum of all interior angles is 180°, which is especially useful when solving for unknown angles.