## hypotenuseThe longest side of a right triangle – the one opposite the right angle. The word comes from the Greek roots hypo meaning "under" (which also appears, for example, in "hypodermic"
– "under the skin") and tein or ten, for stretch.
Thus hypotenuse is the line segment "stretched under" the right angle. See
also Pythagoras' theorem. ## Related category• GEOMETRY | |||||

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