Some identities arising from inversion of Pappus chains in an arbelos - Giovanni Lucca We consider the inversive images, with respect to the incircle of an arbelos, of the three Pappus chains associated with the arbelos, and establish some identities connecting the radii of the circles involved. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education