A planar graph is a network that can be drawn in a plane without any edges intersecting.

apex graph | Barnette's conjecture | biplanar graph | complete graph | critical nonplanar graph | doublecross graph | double-toroidal graph | dual graph | graph crossing number | graph genus | graph skewness | graph thickness | integral embedding | Kuratowski's theorem | nonplanar graph | outerplanar graph | planar connected graph | planar embedding | planar straight line embedding | polyhedral graph | rectilinear crossing number | singlecross graph | Steinitz's theorem | toroidal graph | triangulated graph | utility graph

college level