Using the wrong operation when multiple operations are requiredįinding a missing hypotenuse requires squaring, adding, and square roots.Students trying to apply the a \times b = c formula for area can make this misunderstanding. The Pythagorean theorem finds the missing side length, not an area or perimeter. Finding an area or perimeter instead of the hypotenuse. Mixing up what sides correspond to a, b and c can lead to an incorrect answer. When finding a missing hypotenuse using c^ the hypotenuse is always labeled c. Mixing up leg and hypotenuse labels in the Pythagorean theorem. Students may incorrectly identify one of the legs as the hypotenuse if they forget this key aspect. The hypotenuse is always opposite the right angle and is the longest side of a right triangle.
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