# Tetrahedron

Tetrahedron – Is a solid shape of 4 triangles.

**Tetchy** about **head room** (**tetrahedron**) wouldn’t you be if you had a ceiling like this.

**Example 1**

The most you can see of a tetrahedron is three sides at once.

**Example 2**

A tetrahedron placed so you can only see two faces.

**Example 3**

A tetrahedron viewed from above.