Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle

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asked Feb 4, 2018 in Mathematics by Kundan kumar (49,132 points) 34 381 1015
Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle

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answered Feb 4, 2018 by Vikash Kumar (144,729 points) 8 11 21
 
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