Math, asked by kprince8038, 20 days ago

Proove theorem of circles

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Answered by santoshgupta9495

Draw two radii as shown. Since an angle subtended at the circumference by an arc is half that subtended at the centre, the angles round the centre are 2a and 2b. Angles round a point add up to 360° so 2a + 2b = 360°. Therefore a + b = 180°, so the theorem is proven.

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