Let V 1 2 3 n Let X i j i je V and are relatively prime The resulting graph V X is denoted by G Draw G4 and G5 Solution For G V 1 2 3 4 and X 1 2 1 3 1 4 2 3 3 4 For G V 1 2 3 4 5 and X 1 2 1 3 1 4 1 5 2 3 2 5 3 4 3 5 4 5 3 2 4 Graph of G Fig 1 11 1 2 DEGREES Graph of Gs Fig 1 12 Definition The degree of a point v in graph G is the number of lines incident with v It is denoted by d v or deg v or d G vi