Concept in Definition ABC

According to the context in which it is used, the word parallel will present different references ...

At the behest of the Geometry, parallel, will be that line or plane equidistant from another line or plane, in such a way that no matter how long they are prolonged, they cannot be cut. On the contrary, the lines o blueprints Perpendicular are those that can be found at a point of being prolonged. Two lines will be parallel if they have equal slopes.

On the other hand, to that corresponding, similar or developing at the same time is also called parallel. The association is carrying out parallel policies on the issue of the earthquake, they are rebuilding houses on the one hand and receiving aid that comes from other countries, on the other..

In the mapping, a parallel will be each of the imaginary horizontal circles that surround the earth. On the parallels and starting from the meridian that will be taken as origin, for example the Meridian of Greenwich, you can measure the longitude, which can be east or west, depending on the direction of measurement of the same.

Contrary to what happens with the meridians, the parallels are not maximum circumferences, because except for the Equator they do not contain the center of the earth; the angle formed by a meridian and the equatorial line is called latitude, which may be north or south, according to the hemisphere.

There are five extraordinary parallels, they are: Circle Arctic Polar (66.5 ° N latitude), Tropic of Cancer (23.5 ° N latitude; It is the northernmost parallel and in which the sun reaches its zenith, which occurs during the June solstice), Ecuador (latitude 0 °; here the sun reaches its zenith on the equinox of spring and of fall), Tropic of Capricorn (23.5 ° S; it is the southernmost parallel that exists, reaching its zenith during the December solstice) and the Antarctic Circle (latitude 66.5 ° south).

It is by these parallels that the planet earth is divided into four zones: intertropical zone, temperate zone and glacial zone or polar zone.
On the other hand, in Mechanics, a parallel will be the operation carried out on the front wheels of a vehicle so that they turn and roll in parallel.

And at the behest of sport is called parallel to parallel bars in which various exercises are performed gymnastics.