Urawa Red Diamonds and fixtures between them were known as "Marunouchi derbies", although the term is falling out of use as they are now based in different prefectures and rarely play home games in Tokyo stadiums. Rivals further afield include Kashima Antlers, F.C. Tokyo, Yokohama Marinos, Kawasaki Frontale, and, even farther away, Gamba Osaka. Old JSL championship rivalries with Sanfrecce Hiroshima, Cerezo Osaka and Shonan Bellmare have ebbed down as those clubs had nadirs in the second tier. The club also has women's and amateur teams. Mitsubishi (Amateur era) Urawa Red Diamonds (Professional era) See "Individual Award Winners (Urawa Red Diamonds)" "As of
Incircle and excircles of a triangle circle is formula_100 where "r" is the incircle radius and "s" is the semiperimeter of the triangle. The following relations hold among the inradius "r", the circumradius "R", the semiperimeter "s", and the excircle radii "r", "r", "r": The circle through the centers of the three excircles has radius 2"R". If "H" is the orthocenter of triangle "ABC", then The Nagel triangle or extouch triangle of "ABC" is denoted by the vertices "T", "T" and "T" that are the three points where the excircles touch the reference triangle "ABC" and where "T" is opposite of "A", etc. This triangle "TTT"