I wondered if someone could help me with the following problem.(adsbygoogle = window.adsbygoogle || []).push({});

Gn (n >= 2) is a graph representing the vertices abd edges of a regular 2n sided polygon, with additional edges formed by the diagonals for each vertex joined to the vertex opposite i.e. vertex 1 is joined to n+1, vertex 2 to n+2 and so on, vertex n to 2n.

1) How can I show that G3 is isomorphic to K3,3?

2) How can I state (with reason) a value of n for which Gn is planar. Explaining why for all values greater than this value of n, Gn will be non-planar?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Discrete Maths

**Physics Forums | Science Articles, Homework Help, Discussion**