Some golden sections in the equilateral and right isosceles triangles - Dao Thanh Oai Associated with the equilateral triangle and the right isosceles triangles and their circumcircles, we exhibit some segments that are divided in the golden ratio. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education