More simply, the angle at the centre is double the angle at the circumference. Angle OGK (\(x\)) = angle OKG because triangle GOK is also isosceles. Lengths OK and OG are also both radii. Angle GOH = ...

An angle is created when two lines meet. There are different types of angles based on their measurement. Let's look at the different types. A right angle looks like the corner of a square or the edge ...