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triangle    音标拼音: [tr'ɑɪ,æŋgəl]
n. 三角形,三人一组,三角关系

三角形,三人一组,三角关系

triangle
n 1: a three-sided polygon [synonym: {triangle}, {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: a small northern constellation near Perseus between Andromeda
and Aries [synonym: {Triangulum}, {Triangle}]
4: any of various triangular drafting instruments used to draw
straight lines at specified angles
5: a percussion instrument consisting of a metal bar bent in the
shape of an open triangle

Triangle \Tri"an`gle\, n. [L. triangulum, fr. triangulus
triangular; tri- (see {Tri-}) angulus angle: cf. F.
triangle. See {Angle} a corner.]
1. (Geom.) A figure bounded by three lines, and containing
three angles.
[1913 Webster]

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.
[1913 Webster]

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.
[1913 Webster]

3. A draughtsman's square in the form of a right-angled
triangle.
[1913 Webster]

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.
[1913 Webster]

5. (Astron.)
(a) A small constellation situated between Aries and
Andromeda.
(b) A small constellation near the South Pole, containing
three bright stars.
[1913 Webster]

{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.
[1913 Webster]

176 Moby Thesaurus words for "triangle":
Platonic body, T square, acute-angled triangle, adulterous affair,
adultery, affair, amour, battery, bell, bells, bones, branks,
castanets, celesta, chime, chimes, church bell, clapper, clappers,
clover, cowbell, crank, crash cymbal, cube, cuboid, cucking stool,
cuckoldry, cusp, cymbals, decagon, deuce-ace, dinner bell,
dinner gong, dodecagon, dodecahedron, doorbell, ducking stool,
entanglement, equilateral triangle, eternal triangle,
finger cymbals, finger pillory, fire bell, flirtation,
forbidden love, foursquare, gamelan, glockenspiel, gnomon, gong,
gong bell, hand bell, handbells, hanky-panky, heptagon, hexagon,
hexahedron, hypercube, icosahedron, idiophone, illicit love,
infidelity, intrigue, isosceles triangle, jingle bell, leash,
liaison, love affair, lyra, maraca, marimba, metallophone, oblong,
obtuse-angled triangle, octagon, octahedron, orchestral bells,
oxygon, parallelepiped, parallelogram, passing bell, pentagon,
pentahedron, percussion, percussion instrument, percussions,
percussive, pillory, polygon, polyhedron, prism, prismoid, pyramid,
quadrangle, quadrant, quadrature, quadrilateral, rattle,
rattlebones, rectangle, rhombohedron, rhomboid, rhombus, romance,
romantic tie, rule, ruler, sacring bell, set of three, shamrock,
sheepbell, sizzler, sleigh bell, snappers, square, stocks,
straightedge, tam-tam, telephone bell, tercet, ternary, ternion,
terzetto, tetragon, tetragram, tetrahedron, three, threesome,
tierce, tintinnabula, tintinnabulum, tongue, tonitruone, trapeze,
trapezium, trapezoid, treadmill, trebuchet, trefoil, trey, triad,
trialogue, triangles, tricorn, trident, triennium, trihedron,
trilateral, trilogy, trimester, trine, trinity, trinomial, trio,
triphthong, triple crown, triple threat, triplet, triplopy, tripod,
triptych, trireme, triseme, triskelion, trisul, triumvirate,
triunity, trivet, troika, tubular bells, unfaithfulness, vibes,
vibraphone, whipping post, wooden horse, xylophone

Triangle, VA -- U.S. Census Designated Place in Virginia
Population (2000): 5500
Housing Units (2000): 2318
Land area (2000): 2.633489 sq. miles (6.820706 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 2.633489 sq. miles (6.820706 sq. km)
FIPS code: 79360
Located within: Virginia (VA), FIPS 51
Location: 38.551287 N, 77.325900 W
ZIP Codes (1990): 22172
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Triangle, VA
Triangle


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    A triangle is a fundamental geometric shape composed of three-line segments that intersect at three distinct points This article aims to cover the definition, types, properties, formulas for calculating area perimeter, and examples of triangles
  • Triangle - Math. net
    A triangle is a closed, two-dimensional shape that has 3 sides, 3 angles, and 3 vertices It is the polygon with the fewest sides Since it is the simplest form of a polygon, any polygon can be constructed using two or more triangles The following list describes various common parts of a triangle:
  • Triangles | Geometry (all content) | Math | Khan Academy
    Test your understanding of Triangles with these 10 questions You probably like triangles You think they are useful They show up a lot What you'll see in this topic is that they are far more magical and mystical than you ever imagined!
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    Note that a given triangle can be more than one type at the same time For example, a scalene triangle (no sides the same length) can have one interior angle 90°, making it also a right triangle





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