Question

The central angle of a half circle is 180 degrees. The central angle of a quarter circle is 90 degrees. How many degrees is the central angle of an eighth of a circle?

Answer 1

Total circle = 360°
1/2 of circle = 1/2 x 360 = 180°
1/4 of the circle = 1/4 x 360 = 90°

Similarly,
1/8 of the circle = 1/8 x 360 = 45°