The Hippo Snark

Click and drag to move vertices. Right-click to change color and size.

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1. Find whether or not this graph is planar. Prove it.
2. Find the chromatic index of the graph. Show this by coloring the edges.
3. Find the chromatic number of the graph. Show this by coloring the vertices.

Caroline desJardins-Park, May 26, 2010, Created with GeoGebra