Definition of triangle

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< triamcinolone

triangular >

(click for a larger image)
triangle
top: right triangle
bottom: equilateral triangle

tri·an·gle

(tr

l) KEY

NOUN:

1. The plane figure formed by connecting three points not in a straight line by straight line segments; a three-sided polygon.
2. Something shaped like such a figure: a triangle of land.
Any of various flat, three-sided drawing and drafting guides, used especially to draw straight lines at specific angles.
Music A percussion instrument consisting of a piece of metal in the shape of a triangle open at one angle.
A relationship involving three people, especially a ménage à trois.

ETYMOLOGY:
Middle English, from Old French, from Latin triangulum, from neuter of triangulus, three-angled : tri-, tri- + angulus, angle

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