# Perimeter

This time we are looking on the crossword puzzle clue for: Perimeter.
it’s A 9 letters crossword definition.
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### Random information on the term “Perimeter”:

Arc length is the distance between two points along a section of a curve.

Determining the length of an irregular arc segment is also called rectification of a curve. The advent of infinitesimal calculus led to a general formula that provides closed-form solutions in some cases.

A curve in the plane can be approximated by connecting a finite number of points on the curve using line segments to create a polygonal path. Since it is straightforward to calculate the length of each linear segment (using the Pythagorean theorem in Euclidean space, for example), the total length of the approximation can be found by summing the lengths of each linear segment; that approximation is known as the (cumulative) chordal distance.

If the curve is not already a polygonal path, using a progressively larger number of segments of smaller lengths will result in better approximations. The lengths of the successive approximations will not decrease and may keep increasing indefinitely, but for smooth curves they will tend to a finite limit as the lengths of the segments get arbitrarily small.

### Random information on the term “FRINGE”:

Science fiction (sometimes called sci-fi or just SF) is a genre of speculative fiction that typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel universes, and extraterrestrial life. It has been called the “literature of ideas”, and often explores the potential consequences of scientific, social, and technological innovations.

Science fiction, whose roots go back to ancient times, is related to fantasy, horror, and superhero fiction, and contains many subgenres. However its exact definition has long been disputed among authors, critics, and scholars.

Science fiction literature, film, television, and other media have become popular and influential over much of the world. Besides providing entertainment, it can also criticize present-day society, and is often said to inspire a “sense of wonder”.

“Science fiction” is difficult to define precisely, as it includes a wide range of concepts and themes. James Blish wrote: “Wells used the term originally to cover what we would today call “hard” science fiction, in which a conscientious attempt to be faithful to already known facts (as of the date of writing) was the substrate on which the story was to be built, and if the story was also to contain a miracle, it ought at least not to contain a whole arsenal of them.”