To find the perimeter of a triangle, you simply add the lengths of all its sides. Here’s a simple way to understand it:

1. Know the sides: Imagine your triangle has three sides, which we can call $a$, $b$, and $c$.

2. Follow this formula: You can find the perimeter $P$ by using this formula: $P = a + b + c$

So, just take a ruler, measure each side, and then add them together! It’s that simple!