central angle

noun

Geometry.

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

central angle

noun

1. an angle whose vertex is at the centre of a circle

central angle

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

Word History and Origins

Origin of central angle¹

First recorded in 1900–05

Example Sentences

There, sure enough, was Fernando, crawling on hands and knees, his head and shoulders just appearing around the central angle.

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And midway between Harry Urquhart and the half-caste guide, standing upright at the central angle, was Sheikh Bayram, the Black Dog of the Cameroons, like a great bird of prey perched above its eyrie.

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This makes each base angle 72° and the vertical angle 36°, the latter being the central angle of a regular decagon,—essentially our present method.

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Ephraemi this central angle is sometimes a little rounded: in Codd.

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From the central angle corresponding to the arc on the surface, he calculated the radius and hence the circumference of the earth.

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