The longest side of a right triangle, opposite the right angle.
- ‘In case you have forgotten your high school geometry, the hypotenuse is the side opposite the right angle.’
- ‘Can we have any other Pythagorean triangles with a Fibonacci number as the hypotenuse (the longest side)?’
- ‘In fact it is the length of the hypotenuse of a right angled triangle which had sides of length one.’
- ‘He sees the hypotenuse of a right triangle made by the deck, the mast and the front edge of the beam moving down to the deck.’
- ‘The square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the legs.’
Late 16th century: via Latin hypotenusa from Greek hupoteinousa (grammē) subtending (line) from the verb hupoteinein (from hupo under + teinein stretch).