Math

Concurrences in a Decagon

Difficulty
x xxxxxxx xxxxxxx xxx \(xx\) xxxxxxxx. xxxx xxxxx xxxxxxxx xxxx xxxxxxx xxxxxxx xxx xxxxxxxx xxxxxxxx, xxxxxxxxx xxx xxxxx. xxx xxxx xxxxxxxx xxx xxxxx xx xxxxx, xxx xxx xxxx xxxxxxxx xxxxxx xxx xx xxxxxxx xxxxx xx xxxxx xxxxxxxx?

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