A pentagon is a figure with five sides.
Pentagon is a term that comes from a word of Greek origin and serves to identify a polygon composed of five edges or sides and the same number of angles . In geometry , we speak of a regular pentagon when the figure has all its sides identical and its interior angles are congruent. The sum of these angles allows us to reach 540° , which means that each angle, in a regular pentagon, measures 108° .
For example: “The teacher asked us to draw a pentagon in the notebook, using a ruler and a compass” , “Yesterday they taught us what pentagons and trapezoids are” , “I would appreciate it if you could explain to me the difference between a pentagon and a quadrilateral ” .
The five sides and five angles are the distinctive feature of the pentagon. Other polygons are differentiated by having three ( triangles ), four ( quadrilaterals ), six ( hexagons ), seven ( heptagons ), eight ( octagons ) or ten ( decagons ) sides and angles.
pentagan shape
It is possible to refer to anything that looks like a pentagon (that is, it is made up of five lines and the same number of angles) with the name of the geometric figure. In this way we can talk about pentagons in reference to a building , a nut , etc.: “What surprised me most about the city is the pentagon-shaped building that is in the center” , “Please pass me the pentagon nut so secure this leg of the furniture.”
This figure and other similar ones have replaced circles in the computer and home appliance market for stylistic and fashion-related reasons; There are usually seasons in which rounded shapes are preferred, and others that point to angular edges.
A pentagon can undergo a geometric transformation such as rotation or reflection.
The headquarters of the US Department of Defense
The headquarters of the United States Department of Defense is called the Pentagon because of the shape of its main building. It is located in Arlington County , Virginia , and has five stories.
The Pentagon building was built between 1941 and 1943 . Currently about 23,000 people work there, including civilians and military. Thanks to its particular design , it is possible to cover the distance between any two points of the building in less than ten minutes.
It is worth mentioning that different myths and mysteries revolve around this building; One of them says that the North American government demanded that Google delete the images of the Pentagon that it had captured for use in Google Maps . Likewise, it is rumored that many countries fear that this popular service will reveal the strategic locations of their headquarters and secret research centers.
It is interesting to mention that for about eight decades the Pentagon was considered the largest office building on the planet. Only in 2023 , when the Surat Diamond Exchange ( India ) was inaugurated, did it lose this position.
The United States Department of Defense building is known as the Pentagon.
September 11 attack on the Pentagon
After the disastrous September 11, 2001 , the US government made an official statement of its version of the terrorist events, although many people believe that the truth is very different. For example, it is questioned whether such a large plane traveling at a speed of 400 kilometers per hour did not cause major damage to the Pentagon. Furthermore, the absence of photos of the remains of the ship gives rise to the possibility of staging.
All this contrasts with the variety of images and videos that were released of the Twin Towers , which allowed journalists to analyze the attack in detail and depth. The government did not authorize the capture of evidence of any kind in the Pentagon case, but was in charge of disseminating its own photographs ; and it is after scrutinizing them that many began to think that the truth was being hidden.
Among the images released by the Pentagon, various details can already be questioned and there are inconsistencies that reinforce the idea of a montage. There are those who think that the real damages were much greater, and that the government decided to minimize them so as not to demonstrate weakness compared to other countries . On the other hand, it is believed that there was no attack against the building and that it was manufactured as part of a strategy to react to the real attack.
The term in music
In the musical field, "El Pentagono" is a compilation of the reggaeton genre presented by Don Omar and produced by Revol . Its launch took place in 2007 and eleven years later "El Pentagono II" was presented, an album that is the second part of the compilation.
Continuing with music , Grupo Pentagono was a pop band from Venezuela that remained active between 1985 and 1991 . In that period he released four albums. A decade after the group broke up, a greatest hits album was released.