What do the sides of a triangle add up to?

A triangle is a closed 2D shape that has 3 angles, 3 vertices, and 3 sides.

Answer: The sides of a triangle add up to give the perimeter.

Let's find out the answer with some explanation.

Explanation:

We know that the sum of any 2D geometric figure is known as its perimeter.

So, if we add the sides of a triangle, we get the perimeter of the triangle.

Let's see an example of a perimeter of the triangle given below,

Hence, the sides of a triangle add up to give the perimeter.