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Circle A is inscribed in a quadrilateral. What is the perimeter of the quadrilateral?

User Kvivek
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1 Answer

5 votes
AB + CD = BC + DA
Where A, B, C, and D are points on the quad, and AB is the length of the line A to B, etc.

Since you know three sides, you can easily solve for the fourth.
User Ali Gol Gol
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