Graph_1.is_planar(set_embedding=True)
Graph_1.get_embedding()
returns
True{'A': ['E', 'I', 'D'], 'C': ['G', 'E'], 'B': ['D', 'F'], 'E': ['C', 'G',
'I', 'A'],
'D': ['A', 'I', 'F', 'B'], 'G': ['F', 'I', 'E', 'C'], 'F': ['B', 'D', 'I',
'G'], 'I': ['A', 'E', 'G', 'F', 'D']}
Triangle : BDF is given "anti-clockwise" in the embedding and planar plot
http://doc.sagemath.org/html/en/reference/graphs/sage/graphs/generic_graph.html#sage.graphs.generic_graph.GenericGraph.is_planar
:
set_embedding - whether or not to set the instance field variable
that contains a combinatorial embedding (*clockwise ordering *of neighbors
> at each vertex)
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