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. . . . 2x. x. . o. Angle subtended at the Centre is twice the angle at the circumference. Case 2. . . . . . Angles Subtended in the same segment of a circle are equal. Chop Sticks. . . . . A. B. C. D. . . Cyclic Quadrilateral. Points which lie on the circumference of the same circle are called cyclic (or concyclic)points. A cyclic quadrilateral is a quadrilateralwith all its four corners (vertices) on thecircumference of the same circle..
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