Take a hexagon and add the three longest diagonals. IS the graph obtained this way planar?
I'm able to draw the graph very easily. But I don't really understand how to determine what graphs are planar and which aren't.
2026-03-25 19:25:13.1774466713
Determining Planar Graphs
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Hint: Walk around the hexagon and label the corners (in this order), "Water", "Jones", "Gas", "Smith", "Electricity", "Williams". Does that remind you of anything?