On the diagonals of a cyclic quadrilateral - Claudi Alsina and Roger B. Nelsen

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

    On the diagonals of a cyclic quadrilateral - Claudi Alsina and Roger B. Nelsen​

    We present visual proofs of two lemmas that reduce the proofs of expressions for the lengths of the diagonals and the area of a cyclic quadrilateral in terms of the lengths of its sides to elementary algebra.

    [​IMG]​

    ✪ ✪ ✪ ✪ ✪


    Link tải tài liệu:

    LINK TẢI TÀI LIỆU


     

    Xem các chủ đề cùng chuyên mục

    LTTK CTV, 6/10/19
    #1