ENCYCLOPEDIA OF TRIANGLE CENTERS

Long ago, someone drew a triangle and three segments across it. Each segment started at a vertex and stopped at the midpoint of the opposite side. The segments met in a point. The person was impressed and repeated the experiment on a different shape of triangle. Again the segments met in a point. The person drew yet a third triangle, very carefully, with the same result. He told his friends. To th

[Hyperion64]

三角形の重心、垂心、傍心、外心、内心．．．以外に数千もの点が定義されている！

[Jizamurai]

重心、外心、内心などの三角形の中心は 現在3500以上定義されていることについてのなんかアレ

[pulltop-birth]

重い、すごい

[kazkaz03]

重心、内心など三角形で定義される有意味な点。３５００以上あるらしい。