Understanding the Triangle Inequality Theorem

The Triangle Inequality Theorem says that in any triangle, if you take the lengths of any two sides, their total length must be more than the length of the third side.

Types of Triangles:

• Acute Triangle: All sides follow the rule of the theorem perfectly.

• Obtuse Triangle: One side is a bit longer than the total of the other two sides.

• Right Triangle: One side is equal to the sum of the squares of the other two sides.

Common Issues:

• Sometimes, people can get the measurements wrong, which can make it hard to tell what type of triangle it is.

• Making sure all the rules are followed requires careful measuring.

How to Fix It:

• Use accurate measuring tools and check your work. This will help you correctly classify triangles.