The Simson triangle and its properties - Todor Zaharinov Let ABC be a triangle and P_1, P_2, P_3 points on its circumscribed circle. The Simson triangle for P_1, P_2, P_3 is the triangle bounded by their Simson lines with respect to triangle ABC. We study some interesting properties of the Simson triangle. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education