Mathematics for IGCSE & O level - Circle Theorems (Section 3 - No. 5)
In a circle, how is the angle at the center related to the angle at the circumference subtended by the same arc?
Equal
The center angle is half the circumference angle.
The center angle is double the circumference angle.
Supplementary
Giải thích
The angle at the center is twice the angle at the circumference.