# What is the bond angle in a tetrahedral molecule?

A tetrahedron is a classic $\text{Platonic solid......}$
And thus a tetrahedron is a four-faced solid. The angles at each vertex of a tetrahedron is ${109.5}^{\circ}$. Most of organic chemistry, a huge field employing tens of thousands of chemists, is based on this simple four-sided solid.