On tripolars and parabolas - Paris Pamfilos Starting with an analysis of the configuration of chords of contact points with two lines, defined on conics circumscribing a triangle and tangent to these lines, we prove properties relating to the case the conics are parabolas and a resulting method to construct the parabola tangent to four lines. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education
