Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. It is the two-dimensional analogue of the length of a curve or the volume of a solid . Two different regions may have the same area ; by synecdoche, "area" sometimes is used to refer to the region, as in a "polygonal area".
The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region in the western part of the North Atlantic Ocean where, according to an urban legend, a number of aircraft and ships are said to have disappeared under mysterious circumstances. The idea of the area as uniquely prone to disappearances arose in the mid-20th century, but most reputable sources dismiss the idea that there is any mystery.
A triangle is a polygon with three corners and three sides, one of the basic shapes in geometry. The corners, also called vertices, are zero-dimensional points while the sides connecting them, also called edges, are one-dimensional line segments. A triangle has three internal angles, each one bounded by a pair of adjacent edges; the sum of angles of a triangle always equals a straight angle. The triangle is a plane figure and its interior is a planar region. Sometimes an arbitrary edge is chosen to be the base, in which case the opposite vertex is called the apex; the shortest segment between base and apex is the height. The area of a triangle equals one-half the product of height and base length.
A pink triangle has been a symbol for the LGBT community, initially intended as a badge of shame, but later reappropriated as a positive symbol of self-identity. In Nazi Germany in the 1930s and 1940s, it began as one of the Nazi concentration camp badges, distinguishing those imprisoned because they had been identified by authorities as gay men or trans women. In the 1970s, it was revived as a symbol of protest against homophobia, and has since been adopted by the larger LGBT community as a popular symbol of LGBT pride and the LGBT movements and queer liberation movements.
In geometry, a trapezoid in North American English, or trapezium in British English, is a quadrilateral that has one pair of parallel sides.
The Dayton Triangles were an original franchise of the American Professional Football Association in 1920. The Triangles were based in Dayton, Ohio, and took their nickname from their home field, Triangle Park, which was located at the confluence of the Great Miami and Stillwater Rivers in north Dayton. They were the longest-lasting traveling team in the NFL (1920–1929), and the last such "road team" until the Dallas Texans in 1952, who, coincidentally, descended from the Dayton franchise.
In geometry, an isosceles triangle is a triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length, the latter version thus including the equilateral triangle as a special case. Examples of isosceles triangles include the isosceles right triangle, the golden triangle, and the faces of bipyramids and certain Catalan solids.
The Triangle Shirtwaist Factory fire in the Greenwich Village neighborhood of Manhattan, New York City, on Saturday, March 25, 1911, was the deadliest industrial disaster in the history of the city, and one of the deadliest in U.S. history. The fire caused the deaths of 146 garment workers – 123 women and girls and 23 men – who died from the fire, smoke inhalation, falling, or jumping to their deaths. Most of the victims were recent Italian or Jewish immigrant women and girls aged 14 to 23; of the victims whose ages are known, the oldest victim was 43-year-old Providenza Panno, and the youngest were 14-year-olds Kate Leone and Rosaria "Sara" Maltese.
Research Triangle Park (RTP) is the largest research park in the United States, occupying 7,000 acres (2,833 ha) in North Carolina and hosting more than 300 companies and 65,000 workers. It is owned and managed by the Research Triangle Foundation, a private non-profit organization.
Nazi concentration camp badges, primarily triangles, were part of the system of identification in German camps. They were used in the concentration camps in the German-occupied countries to identify the reason the prisoners had been placed there. The triangles were made of fabric and were sewn on jackets and trousers of the prisoners. These mandatory badges of shame had specific meanings indicated by their colour and shape. Such emblems helped guards assign tasks to the detainees. For example, a guard at a glance could see if someone was a convicted criminal and thus likely of a tough temperament suitable for kapo duty.
The Eye of Providence or All-Seeing Eye is a symbol depicting an eye, often enclosed in a triangle and surrounded by a ray of light or a halo, intended to represent Providence, as the eye watches over the workers of mankind. A well-known example of the Eye of Providence appears on the reverse of the Great Seal of the United States, which is depicted on the United States one-dollar bill.
The triangle offense is an offensive strategy used in basketball. Its basic ideas were initially established by Hall of Fame coach Sam Barry at the University of Southern California. His system was further developed by former Houston Rockets and Kansas State University basketball head coach Tex Winter, who played for Barry in the late 1940s. Winter later served as an assistant coach for the Chicago Bulls in the 1980s and 1990s and for the Los Angeles Lakers in the 2000s, mostly under head coach Phil Jackson.
In Euclidean geometry, a square is a regular quadrilateral, which means that it has four sides of equal length and four equal angles. It can also be defined as a rectangle with two equal-length adjacent sides. It is the only regular polygon whose internal angle, central angle, and external angle are all equal (90°), and whose diagonals are all equal in length. A square with vertices ABCD would be denoted ABCD.
Black triangles are UFOs reported as having a triangular shape and dark color, typically observed at night, described as large, silent, hovering, moving slowly, and displaying pulsating, colored lights which they can turn off.
Morice Fredrick "Tex" Winter was an American basketball coach and innovator of the triangle offense. He was a head coach in college basketball for 30 years before becoming an assistant coach in the National Basketball Association (NBA). He was an assistant to Phil Jackson on nine NBA championship teams with the Chicago Bulls and the Los Angeles Lakers. Winter was inducted to the Naismith Memorial Basketball Hall of Fame in 2011.
The Golden Triangle is an area of Southeast Texas between the cities of Beaumont, Port Arthur, and Orange.
The Triangle Network, formally known as the Triangle Arts Trust, is an international arts organisation that brings together artists from different countries to explore new ideas and expand the boundaries of their practice.
In mathematics, the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
