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# Proofs and Use of the Pythagorean Theorem

## Identify triples and calculate missing sides

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Derive and Use the Pythagorean Theorem

Learn to derive and use the Pythagorean Theorem.
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## Measuring the World

Learn how land surveyors use the Pythagorean theorem to create maps.
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