Mathematics for IGCSE & O level - Circle Theorems (Section 2 - No. 31)
What is the relationship between the angle at the center of a circle and the angle at the circumference subtended by the same arc?
The angle at the center is half the angle at the circumference.
The angle at the center is twice the angle at the circumference.
The angles are equal.
There is no relationship between the two angles.
Giải thích
The angle at the center of a circle is twice the angle at the circumference subtended by the same arc.