Question

The angle subtended by the diamete at the centre of a circle is

• A. $0^{\circ }$
• B. ${180}^{\circ }$
• C. ${360}^{\circ }$
• D. ${720}^{\circ }$

Answer 1

The correct option is B

${180}^{\circ }$

Diameter is the longest chord of the circle that passes through the centre. It subtends an angle of ${180}^{\circ }$ at the centre of the circle.

$AB$ is the diameter of the circle with centre, $O$ subtending an angle of ${180}^{\circ }$ at the centre.