Minimum Spanning Tree - 4 Vertices with 2 Junction Points

Position the vertices at the desired location. Move the Junction Points S1 and S2 to find the minimum network. Remember that one or both of the junction points can be placed at a vertice to use fewer than two junction points. Click the Show Angles button to show/hide the angles at the junction points. You may choose to show and move one or two Steiner overlays to assist you in finding the interior junction points.

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Jerel L. Welker
Lincoln Southwest High School
Lincoln, Nebraska
jwelker@lps.org

Jerel L. Welker, Created with GeoGebra