central angle

American  

noun

Geometry.

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

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central angle British  

noun

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

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central angle Scientific  

/ sĕn′trəl /

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

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Etymology

Origin of central angle

First recorded in 1900–05

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Example Sentences

See Examples For:

central angle

Find the length of the arc of a circle of radius 5 inches subtended by the central angle of 220°.

From Textbooks ● Dec. 1, 2021

A sector of a circle has a central angle of 45° and a radius 6 cm.

From Textbooks ● Dec. 1, 2021

Recall that, in a circle of radius r, the length s of an arc subtended by a central angle of θ radians is s = rθ.

From Textbooks ● Mar. 30, 2016

Find the length of the arc of a circle of radius 12 inches subtended by a central angle of radians.

From Textbooks ● Feb. 13, 2015

Ovary free, three-celled; ovules four in each cell, inserted internally into the central angle, the upper ones ascending, the lower pendulous.

From The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. by P. L. Simmonds

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