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black triangle

1. An unidentified flying object (popularly known as a UFO) in the shape of a dark triangle, typically with points of light in each corner. I know you think I'm crazy, but every spring, I see those black triangles appearing over my corn fields at night!
2. In Nazi Germany, a badge assigned to concentration camp inmates considered "asocial" or mentally unfit for work. Her clinical depression, which was vilified by the Nazis, meant she had to wear a black triangle in the concentration camp.
See also: black, triangle

(the) eternal triangle

a sexual or emotional relationship involving two women and one man or two men and one woman. (*Typically, a couple [man and woman] and another man or woman.) Henry can't choose between his wife and his mistress. It's the eternal triangle. I'm surprised Jane doesn't get tired of the eternal triangle. She goes out with Peter at the weekend and Jim during the week.
See also: eternal, triangle

eternal triangle

A relationship involving three lovers, such as two women involved with one man or two men with one woman. For example, The plot of the murder mystery revolved around the eternal triangle of a husband, wife, and another woman . [c. 1900]
See also: eternal, triangle
References in periodicals archive ?
The reason that you get stuck is that this is a tricky maths problem to solve and the general answer for all possible triangles has not yet been found for any more than 11 lines.
lt;span style="color: #0000ff;">An example of a descending triangle which is normally a bearish signal.
This forms a small triangle called a "corner triangle" because one of its vertices is the corner of the original square.
Draw an equilateral triangle with each side measuring 9 centimeters (above left).
Repeat the procedure again and again, producing a spiraling sequence of ever-smaller triangles.
5] proved that, for grids consisting of triangles, a Hamiltonian path always exists under very mild conditions.
From the diagram, the area of the larger square is four square units, while the area of the smaller square is four triangles that add to two square units.
According to the artist's measurements, if the arrangement of triangles were multiplied by eleven, elevated, and increased in scale by 333 times, this installation could line the heavens.
TRUFORM also allows for a higher level of scalability, meaning the number of triangles or polygons in a 3D image can be varied according to the capabilities of the installed graphics hardware," explained Mr.
When completed in 1995, the Jakarta Financial Tower will be a true state-of-the-art office building characterized by highly efficient and usable office space, dramatic exterior form, the highest quality materials and a superior location in the new 40 hectare Sudirman Central Business District of Jakarta's Golden Triangle.
Everything on the triangle hill was made from triangles.
Removing this transfer overhead allows next generation games to model scenes using many smaller triangles for greater geometric fidelity and depth of field.
The illustration showed a curious tiling of black and white triangles with curved sides.
The RPA hardware is able to draw triangles up to 10X faster than software, thus freeing the CPU to be more responsive to the application itself.