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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 tri·an·gle /ˈtraɪˌæŋgəl/
 三角形,三人一組,三角關係

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 tri·an·gle /ˈtraɪˌæŋgəl/ 名詞
 三角,三角形

From: Webster's Revised Unabridged Dictionary (1913)

 Tri·an·gle n.
 1. Geom. A figure bounded by three lines, and containing three angles.
 Note:A triangle is either plane, spherical, or curvilinear, according as its sides are straight lines, or arcs of great circles of a sphere, or any curved lines whatever. A plane triangle is designated as scalene, isosceles, or equilateral, according as it has no two sides equal, two sides equal, or all sides equal; and also as right-angled, or oblique-angled, according as it has one right angle, or none; and oblique-angled triangle is either acute-angled, or obtuse-angled, according as all the angles are acute, or one of them obtuse. The terms scalene, isosceles, equilateral, right-angled, acute-angled, and obtuse-angled, are applied to spherical triangles in the same sense as to plane triangles.
 2. Mus. An instrument of percussion, usually made of a rod of steel, bent into the form of a triangle, open at one angle, and sounded by being struck with a small metallic rod.
 3. A draughtsman's square in the form of a right-angled triangle.
 4. Mus. A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused.
 5. Astron. (a) A small constellation situated between Aries and Andromeda. (b) A small constellation near the South Pole, containing three bright stars.
 Triangle spider Zool., a small American spider (Hyptiotes Americanus) of the family Ciniflonidae, living among the dead branches of evergreen trees. It constructs a triangular web, or net, usually composed of four radii crossed by a double elastic fiber. The spider holds the thread at the apex of the web and stretches it tight, but lets go and springs the net when an insect comes in contact with it.
 

From: WordNet (r) 2.0

 triangle
      n 1: a three-sided polygon [syn: trigon, trilateral]
      2: something approximating the shape of a triangle; "the
         coastline of Chile and Argentina and Brazil forms two legs
         of a triangle"
      3: any of various triangular drafting instruments used to draw
         straight lines at specified angles
      4: a percussion instrument consisting of a metal bar bent in
         the shape of an open triangle