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Merriam-Webster's Collegiate Dictionary tri·an·gle
\\ˈtrī-ˌaŋ-gəl\\ noun ETYMOLOGY Middle English, from Anglo-French, from Latin triangulum, from neuter of triangulus triangular, from tri- + angulus angle DATE 14th century 1. a polygon having three sides — compare spherical triangle 2.
a. a percussion instrument consisting of a rod of steel bent into the form of a triangle open at one angle and sounded by striking with a small metal rod
b. a drafting instrument consisting of a thin flat right-angled triangle of wood or plastic with acute angles of 45 degrees or of 30 degrees and 60 degrees3. a situation in which one member of a couple is involved in a love affair with a third person
[ triangle 1: 1 equilateral, 2 acute, 3 obtuse, 4 scalene, 5 isosceles, 6 right triangle] triangle
late 14c., from O.Fr. triangle (13c.), from L. triangulum "triangle," from neut. of adj. triangulus "three-cornered," from tri- "three" + angulus "corner, angle." Triangulation is recorded from 1818. "In the huts of witches all the instruments and implements are triangular." ["Handwörterbuch des deutschen Aberglaubens"] Oxford Advanced Learner's Dictionary-牛津双解-OALD7 ☞ triangletri·angle / 5traiAN^l / noun1. a flat shape with three straight sides and three angles; a thing in the shape of a triangle 三角形；三角形物体:
(BrE) a right-angled triangle 直角三角形
(NAmE) a right triangle 直角三角形
Cut the sandwiches into triangles. 把三明治切成三角形。2. a simple musical instrument that consists of a long piece of metal bent into the shape of a triangle, that you hit with another piece of metal 三角铁(打击乐器)3. a situation involving three people in a complicated relationship 三角关系:
a love triangle 三角恋爱⇨ see also eternal triangle 4. (NAmE) = set square Oxford Collocations Dictionary for Students of English Oxford Collocations dictionary for students of Englishtriangle
noun 1 shape ADJ. equilateral, isosceles, right-angled, scalene VERB + TRIANGLE construct (technical), draw Use your protractor to construct an equilateral triangle. | form | cut sth into I cut the sandwiches into triangles. PHRASES the apex of a triangle 2 musical instrument
• Special page at Special page-MUSIC Webster's Third New International Dictionary, Unabridged Search result show the entry is found in: Triangle of Mars
Search result show the entry is found in: maxwell triangle , or astronomical triangle , or oblique triangle , or pascal's triangle , or polar triangle , or quadrantal triangle , or right triangle , or scarpa's triangle , or spherical triangle , or triangle crab , or triangle of forces , or triangle of hesselbach , or triangle of mars , or triangle of scarpa , or triangle spider , or vowel triangle , or bermuda triangle , or triangle inequality , or color triangle , or femoral triangle , or great triangle , or hesselbach's triangle
tri·an·gle
\ˈtrīˌaŋgəl, -aiŋ-\ noun
( -s) Etymology: Middle English, from Latin triangulum, from neuter of triangulus having three angles, triangular, from tri- three (akin to Latin tria, tres three) + angulus angle — more at three , angle 1. : a usually plane polygon having three sides — compare spherical triangle ; see area table 2. : a symbol (as of the Trinity in Christian art or as of life in primitive art), design, or decorative motif shaped like a triangle 3. : a triangular object, marking, area, or arrangement : a triangle-shaped thing: as
a. : a hoisting or weighing device consisting of a tripod of poles or spars from the apex of which is suspended a pulley or balance
b. : a frame formed of three halberds or poles stuck in the ground and united at the top and used formerly to bind British soldiers undergoing corporal punishment — often used in plural
< men were frequently sent to the triangles — Time >
c. : a musical percussion instrument of indefinite pitch usually made of a rod of steel bent into the form of a triangle open at one angle and sounded by striking with a small metal rod; also : a similar piece of metal used in the same way as an instrument of call
< a mess cook was beating the commissary triangle — K.M.Dodson >
d. : a triangular area near the base of the wing in dragonflies
e. : a thin flat right-angled triangular instrument of wood or plastic usually cut with acute angles of 45 degrees or of 30 degrees and 60 degrees and used in drafting
f. : a triangular postage stamp 4.
a. : a group of three : triad
< France's three-party coalition was described … as a type of triangle hard to break and impossible to maintain — P.S.Mowrer >
< triangle in an economic enterprise, composed of management, party leadership and labor-union organization — S.N.Harper & R.B.Thompson >
b. : a situation involving three persons; especially : one involving the love of two men for one woman or of two women for one man and the resulting complications
< a comedy of the eternal triangle, where the lover is a man … and the husband is a fat, lazy, hungry, cowardly, protesting cuckold — Leslie Rees > [triangle 1: 1 equilateral, 2 acute, 3 obtuse, 4 scalene, 5 isosceles, 6 right triangle]
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