Answer:
The measure of angle EOF is;

Step-by-step explanation:
Given the circle in the attached image.
We can see the line EH and FJ Intersect each other at the center.
So, Angle EOF and Angle HOJ form vertically opposite angles.
Recall that vertically opposite angles are congruent;

From the figure, the measure of angle HOJ is given;

Therefore;

The measure of angle EOF is;
