The area of a bicentric quadrilateral - Martin Josefsson We review and prove a total of nine different formulas for the area of a bicentric quadrilateral. Our main result is that this area is given by K= (m^2-n^2)kl/(k^2-l^2) where m, n are the bimedians and k, l the tangency chords. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education