Hypotenuse

Hypotenuse

A hypotenuse is the longest side of a right triangle, the side opposite of the right angle. The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the two other sides.

For example, if one of the other sides has a length of 3 meters (when squared, 9 m²) and the other has a length of 4 m (when squared, 16 m²). Their squares add up to 25 m². The length of the hypotenuse is the square root of this, or 5 m.

The word "hypotenuse" derives, according to some sources, from the Greek ὑποτείνουσα (hypoteinousa), a combination of hypo- ("under") and teinein ("to stretch") [Schwartzman, Steven "The Words of Mathematics, An Etymological Dictionary of Mathematical Terms used in English", Published by the Mathematical Association of America.] . Others suggest the original meaning in Ancient Greek was for a thing which supports something in the manner of a prop or butress dervived from a combination of hypo- ("under") and tenuse ("side"). [cite book |title=Romping Through Mathematics |last=Anderson |first=Raymond |authorlink=Raymond Anderson|coauthors= |year=1947 |publisher=Faber |location= |isbn= |pages=52 ]

ee also

*Cathetus
*Triangle geometry
*Space diagonal
*Nonhypotenuse number
*Taxicab geometry
*Trigonometry

Notes

References

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  • hypoténuse — [ ipɔtenyz ] n. f. • 1520; lat. hypotenusa, gr. hupoteinousa « se tendant sous (les angles) » ♦ Math. Dans un triangle rectangle, Le côté opposé à l angle droit. Le carré de l hypoténuse est égal à la somme des carrés des deux autres côtés… …   Encyclopédie Universelle

  • Hypotenuse — Hypoténuse Dans un triangle rectangle, l hypoténuse est le côté non adjacent à l angle droit, ou le côté opposé à l angle droit. Dans un triangle rectangle, la longueur de l hypoténuse égale la racine carrée de la somme des carrés des deux autres …   Wikipédia en Français

  • Hypotenuse — Sf die dem rechten Winkel gegenüberliegende Seite eines Dreiecks per. Wortschatz fach. (15. Jh.) Entlehnung. Entlehnt aus ml. hypotenūsa, dieses aus gr. hypoteínousa die darunter ausgestreckte (Seite) , zu gr. hypo und gr. teínein spannen .… …   Etymologisches Wörterbuch der deutschen sprache

  • Hypotenuse — Hy*pot e*nuse, Hypothenuse Hy*poth e*nuse, n. [L. hypotenusa, Gr. ?, prob., subtending (sc. ?), fr. ? to stretch under, subtend; ? under + ? to stretch. See {Subtend}.] (Geom.) The side of a right angled triangle that is opposite to the right… …   The Collaborative International Dictionary of English

  • Hypotenuse — (v. gr.), in einem rechtwinkeligen Dreiecke, die dem rechten Winkel gegenüber liegende Seite; die beiden andern Seiten heißen die Katheten. Nach dem Pythagoreischen Lehrsatze ist das Quadrat der H. gleich der Summe der Quadrate der beiden… …   Pierer's Universal-Lexikon

  • Hypotenūse — (griech.), s. Dreieck und Pythagoreischer Lehrsatz …   Meyers Großes Konversations-Lexikon

  • Hypotenuse — Hypotenuse, die dem rechten Winkel gegenüberliegende Seite des rechtwinkligen Dreiecks …   Lexikon der gesamten Technik

  • Hypotenuse — Hypotenūse (grch.), im rechtwinkligen Dreieck die dem rechten Winkel gegenüberliegende Seite. (S. Katheten.) …   Kleines Konversations-Lexikon

  • Hypotenuse — Hypotenuse, griech., im rechtwinkligen Dreiecke die dem rechten Winkel gegenüberliegende Seite …   Herders Conversations-Lexikon

  • hypotenuse — 1570s, from L.L. hypotenusa, from Gk. hypoteinousa stretching under (the right angle), fem. prp. of hypoteinein, from hypo under (see SUB (Cf. sub )) + teinein to stretch (see TENET (Cf. tenet)). Formerly often erroneously hypothenuse …   Etymology dictionary

  • hypotenuse — ► NOUN ▪ the longest side of a right angled triangle, opposite the right angle. ORIGIN from Greek hupoteinousa gramm subtending line …   English terms dictionary

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