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Geography, 22.10.2019 21:50 haleyzoey7

Suppose you take a piece of paper and draw a bunch of straight lines, no one exactly on top of another, that completely cross the paper. this divides the paper up into polygonal regions. prove by induction that you can always color the various regions using only two colors, so that any two regions that share a boundary line have different colors. regions that share only a boundary point are permitted to have the same color.

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