circles: chords and interior angles

circles: chords and interior angles

By Stephen Duncan

A chord is named by its endpoints.

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This line segment is caled chord AB.​

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​Chords

Central angles have a vertex at the center of the circle and two endpoints on the circle's edge.

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This angle is <ACB​

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Central angles

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Central angles: Arcs

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All 3 points of an inscribed angle lie along the circle's edge.

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This angle is <ADB

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Inscribed angles

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