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G285 2021 MC-IME II

Revision as of 18:01, 7 June 2021 by Geometry285 (talk | contribs) (Created page with "==Problem 1== Let <math>20</math> points lie in the interior of the circumcircle of regular decagon <math>ABCDEFGHIJ</math>. If each point is connected to the second farthest...")
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Problem 1

Let $20$ points lie in the interior of the circumcircle of regular decagon $ABCDEFGHIJ$. If each point is connected to the second farthest point away from itself by a line, find the maximum number of regions created by the intersections of lines.

Solution

Problem 2

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