Exercise 16.
Prove that \(K_{3,4}\) is not planar. Do this using Euler's formula, not just by appealing to the fact that \(K_{3,3}\) is not planar.
Prove that \(K_{3,4}\) is not planar. Do this using Euler's formula, not just by appealing to the fact that \(K_{3,3}\) is not planar.