**Explain the “triangle inequality”.**

**Answer:**

The sum of 2 sides is always greater than the third side. For example, if two sides of a triangle are 9 units and 5 units, the third side must be greater than 4, so that when that side and the side that is 5 units are added together, their sum is greater than 9. It would also have to be less than 14, since 9 and 5 added together must be greater than the third side