Answer:
46
Step-by-step explanation:
Theorem: The angle formed at the centre of the circle by lines originating from two points on the circle's circumference is double the angle formed on the circumference of the circle by lines originating from the same points.
You may read more about it on: https://revisionmaths.com/gcse-maths-revision/shape-and-space/circle-theorems
So, angle FJH =23
Hence, angle FGH = 2* 23 = 46
