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If four sides of a quadrilateral `A B C D` are tangential to a circle, then `A C+A D=B D+C D` (b) `A B+C D=B C+A D` (c) `A B+C D=A C+B C` (d) `A C+A D=B C+D B`

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RD SHARMA ENGLISH-CIRCLES-All Questions
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