What's the Fuss About Pythagoras?

Melissa was eager to hear more. She asked, "How do you know when to use it? Will it always work?" Jenny remembered her teacher telling the class that the Pythagorean Theorem ONLY worked with right triangles. So, she explained this to Melissa. Melissa, a fifth grader, wasn't sure how to determine if a triangle is a right triangle.

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Question to consider: What makes a right triangle different from other triangles?

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We can classify triangles by sides or by angles. What are the three ways we can classify triangles by sides? What are the four ways we can classify triangles by angles? Write your answers in your math notebook.

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