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Continue to ChatTheorem 10.8 : The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle Class 9 https://ncertsolutionsforclass9.in/mathematics-theorem-10-8-the-angle-subtended-by-an-arc-at-the-centre-is-double-the-angle-subtended-by-it-at-any-point-on-the-remaining-part-of-the-circle-class-9-07092022/