The intouch triangle and the OI-line - Eric Danneels

  1. Tác giả: LTTK CTV
    Đánh giá: ✪ ✪ ✪ ✪ ✪

    The intouch triangle and the OI-line - Eric Danneels

    We prove some interesting results relating the intouch triangle and the OI line of a triangle. We also give some interesting properties of the triangle center X(57), the homothetic center of the reference triangle and the orthic triangle of the intouch triangle.

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