Does this seem like a strange question to you? Well, it totally depends on who you are. Teachers use this famous theorem so much that a weaker student “on the fringe” in Geometry may use it way too much. I mean, why not. It’s famous! Or they may have no idea when to use it and rarely use it. So here’s the scoop:

1. You may use this theorem **only** with right triangles.

2. Use it when you know any 2 sides of a right triangle and need to know the 3rd side.

3. If you can ‘create’ a right triangle, you can use the Pythagorean Theorem. Sometimes we draw altitudes in a triangle to form right triangles.

This valuable theorem can help you solve many problems **if **you know when and how to use it.

Just for the record, it states, *“The sum of the squares of the legs of a right triangle = the square of the hypotenuse.” *

Now where is that hypotenuse?

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