Left examples are called "Hamiltonian graphs."
Adjacent-numbered pages: BP557 BP558 BP559 BP560 BP561  *  BP563 BP564 BP565 BP566 BP567
math, traditional
connected_graph [smaller | same | bigger]
Aaron David Fairbanks
https://en.wikipedia.org/wiki/Vertex-transitive_graph
Adjacent-numbered pages: BP1094 BP1095 BP1096 BP1097 BP1098  *  BP1100 BP1101 BP1102 BP1103 BP1104
precise, allsorted, notso, math, preciseworld
graph [smaller | same | bigger]zoom in left
Leo Crabbe
https://mathworld.wolfram.com/Edge-TransitiveGraph.html
Adjacent-numbered pages: BP1104 BP1105 BP1106 BP1107 BP1108  *  BP1110 BP1111 BP1112 BP1113 BP1114
precise, allsorted, notso, math, left-narrow, preciseworld
graph [smaller | same | bigger]