Sunday, June 13, 2021

1721. A Property Of Isogonal Conjugates

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2 comments:

  1. Dr. Abdilkadir AltıntaşJune 15, 2021 at 8:29 PM

    https://artofproblemsolving.com/community/u426945h2589766p22339087

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  2. Dr. Abdilkadir AltıntaşJune 15, 2021 at 8:34 PM

    劉志宏
    A1,A1* and A2,A2* are isogonal conjugates. Circles AA1A2* and AA2A1* concur in a point on circle ABC.

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