following user names refer to en.wikipedia. 2007-11-27 18:22 Thechao 379×67× (3167 bytes) The undirected dicircuit of a zweieck (directed) edge. English
Commons Attribution-Share Alike 4.0 truetrue English Example of simple undirected graph with 3 vertices and 3 edges Arabic مثال عن بيان بسيط غير مُوجَّه