This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Euclidean minimum spanning tree.svg Euclidean minimum spanning tree of random set of points in the plane Produced by Derrick Coetzee in Mathematica using the following commands no DiscreteMathCombinatorica points Table Random Random Export pictures eps ShowGraphMinimumSpanningTreeGraphTable Sqrt pointsi pointsj pointsi pointsj