Unit 8 - Lesson 6 - Grade 8: Illustrative Mathematics

Which triangle doesn’t belong?

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What do you notice about the values in the table for Triangle E but not for Triangles D and F?

What do you notice about the values in the table for Triangle Q but not for Triangles P and R?

What do Triangle E and Triangle Q have in common?

Find the missing side lengths. Be prepared to explain your reasoning.

Find the missing side lengths. Be prepared to explain your reasoning.

Find the missing side lengths. Be prepared to explain your reasoning.

For which triangles does a2 + b2 = c2?

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For each of the following triangles, determine if a2 + b2 = c2 where a, b, and c are side lengths of the triangle. Explain how you know.