noun Geometry.

- an angle formed at the center of a circle by two radii.

noun

- an angle whose vertex is at the centre of a circle

- An angle formed by two rays from the center of a circle, with the center forming the vertex.

noun Geometry.

- an angle formed at the center of a circle by two radii.

noun

- an angle whose vertex is at the centre of a circle

- An angle formed by two rays from the center of a circle, with the center forming the vertex.