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Omni-MATH / Let triangleABC(AB<AC) with incenter I circumscribed in ⊙O. Let M,N be midpoint of arc (BAC)^ and (BC)^, respectively. D lies on ⊙O so that AD//BC, and E is tangency point of A-exc… · Discussion

Discussing Let triangleABC(AB<AC) with incenter I circumscribed in ⊙O. Let M,N be midpoint of arc (BAC)^ and (BC)^, respectively. D lies on ⊙O so that AD//BC, and E is tangency point of A-exc… · Omni-MATH

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