A spatial view of the second Lemoine circle - Floor van Lamoen We consider circles in the plane as orthogonal projections of spheres in three dimensional space, and give a spatial characterization of the second Lemoine circle. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education