Angle subtended at the center of a circle

- The angle subtended by an arc at the center of a circle is
- The angle subtended at the center by quadrant of a circle is
- The angle subtended by a chord at the center of a circle is
- The angle subtended by a minor arc at the center of a circle is
- What is the measure of the angle subtended at the center of a circle by its circumference
- Angle at the centre of a circle by an arc
- Angle at the center of a circle