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Objective: I know how to use the Pythagorean theorem to find the length of a missing side of a right triangle.

If we take the length of the hypotenuse to be *c* and the length of the legs to be *a* and *b* then the Pythagorean theorem tells us that:

*c*^{2} = *a*^{2} + *b*^{2}

Read the lesson on Pythagorean theorem for more information and examples.

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