triangle : Idioms & Phrases

Index

acute triangle

  • noun a triangle whose interior angles are all acute
    acute triangle.
WordNet

acute-angled triangle

  • noun a triangle whose interior angles are all acute
    acute triangle.
WordNet

bermuda triangle

  • noun an area in the western Atlantic Ocean where many ships and planes are supposed to have been mysteriously lost
WordNet

equiangular triangle

  • noun a three-sided regular polygon
    equiangular triangle.
WordNet

equilateral triangle

  • noun a three-sided regular polygon
    equiangular triangle.
WordNet

isosceles triangle

  • noun a triangle with two equal sides
WordNet

Legs of a triangle

  • the sides of a triangle; a name seldom used unless one of the sides is first distinguished by some appropriate term; as, the hypothenuse and two legs of a right-angled triangle.
Webster 1913

oblique triangle

  • noun a triangle that contains no right angle
WordNet

obtuse triangle

  • noun a triangle that contains an obtuse interior angle
    obtuse triangle.
WordNet

obtuse-angled triangle

  • noun a triangle that contains an obtuse interior angle
    obtuse triangle.
WordNet

Polar spherical triangle

  • (Spherics), a spherical triangle whose three angular points are poles of the sides of a given triangle. See 4th Pole, 2.
Webster 1913

Quadrantal triangle

  • a spherical triangle having one side equal to a quadrant or arc of 90°.
Webster 1913

right triangle

  • noun a triangle with one right angle
    right triangle.
WordNet

right-angled triangle

  • noun a triangle with one right angle
    right triangle.
WordNet

scalene triangle

  • noun a triangle with no two sides of equal length
WordNet

Self-conjugate triangle

  • (Conic Sections), a triangle each of whose vertices is the pole of the opposite side with reference to a conic.
Webster 1913

southern triangle

  • noun a small bright constellation in the polar region of the southern hemisphere near Circinus and Apus
    Triangulum Australe.
WordNet

Spherical triangle

  • noun a spherical polygon formed by the arcs of 3 great circles
WordNet
  • re on the surface of a sphere, bounded by the arcs of three great circles which intersect each other.
Webster 1913

Triangle spider

  • (Zoöl.), a small American spider (Hyptiotes Americanus) of the family Ciniflonidæ, 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.
Webster 1913