A new proof of a hard but important Sangaku problem - J. Marshall Unger We present a solution to a well-known sangaku problem, previously solved using the Sawayama Lemma, that does not require it. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education