Mathematics – Combinatorics
Scientific paper
2011-06-10
Mathematics
Combinatorics
Scientific paper
We show that every cubic graph can be drawn in the plane with straight-line
edges using only the four basic slopes $\{0,\pi/4,\pi/2,3\pi/4\}$. We also
prove that four slopes have this property if and only if we can draw $K_4$ with
them.
Mukkamala Padmini
Pálvölgyi Dömötör
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