Triangle
noun
1.
a closed plane figure having three sides and three angles.
2.
a flat triangular piece, usually of plastic, with straight edges, used in connection with a T square for drawing perpendicular lines, geometric figures, etc.
3.
any three-cornered or three-sided figure, object, or piece:
a triangle of land.
4.
a musical percussion instrument that consists of a steel triangle, open at one corner, that is struck with a steel rod.
5.
a group of three; triad.
6.
a situation involving three persons, especially one in which two of them are in love with the third.
7.
(initial capital letter) Astronomy. the constellation Triangulum.
noun
1.
(geometry) a three-sided polygon that can be classified by angle, as in an acute triangle, or by side, as in an equilateral triangle. Sum of interior angles: 180°; area: 1/2base × height
2.
any object shaped like a triangle
3.
any situation involving three parties or points of view See also eternal triangle
4.
(music) a percussion instrument consisting of a sonorous metal bar bent into a triangular shape, beaten with a metal stick
5.
a group of three
triangle tri·an·gle (trī’āng’gəl)
n.
A three-sided area, space, or structure.
triangle
(trī’āng’gəl)
A closed geometric figure consisting of three sides.
see: eternal triangle
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