planar graph


Definition: A graph that can be drawn in the plane with no crossing edges.

Generalization (I am a kind of ...)

Specialization (... is a kind of me.)
dual, planar straight-line graph.

Note: Equivalently, a graph that does not contain any subgraph homeomorphic to the complete graph on 5 vertices or the complete bipartite graph with 3 vertices in each partition.

Author: JLG


draw a graph in the plane such that no edges cross (C, C++, Java, and Mathematica).
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Entry modified 2 November 2020.
HTML page formatted Mon Nov 2 12:36:42 2020.

Cite this as:
Joseph L. Ganley, "planar graph", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed. 2 November 2020. (accessed TODAY) Available from: