The problem describes an angle like the one in the picture attached.
The vertex point is H, and G and K are 2 points on the 2 rays.
The way we name such angles, is by using the 3 letters, always letting the vertex point H in the middle. The order of the 2 other letters is not important.
Another way to name the angle is by using only the letter of the vertex point.
So
We can name the angle ∠GHK, ∠KHG or ∠H.
Answer: ∠GHK, ∠KHG or ∠H.