The word pentagon it comes from a word of Greek origin and serves to identify a polygon composed by five edges or sides and the same number of angles . Talk about regular pentagon when the figure has all its identical sides and its interior angles are congruent. The sum of these angles allows to reach 540° , which means that each angle, in a regular pentagon, measures 108° .
To cite some examples of use: “The teacher asked us to draw a pentagon in the notebook, using a ruler and a compass”, "Yesterday we were taught what pentagons and trapezoids are", “I would be grateful if you could explain the difference between a pentagon and a quadrilateral”.
It is possible to refer to everything with the appearance of a pentagon (that is, that is formed from five lines and the same number of angles) with the name of the geometric figure. This way you can talk about pentagons in reference to a building , a nut , etc.: “What surprised me most about the city is the pentagon-shaped building in the center”, "Please pass me the pentagon nut to secure this furniture leg".
This figure and similar ones have replaced the circles in the computer and home appliances market for stylistic and fashion-related issues; seasons usually occur in which rounded shapes are preferred, and others that point to angled edges.
The headquarters of United States Department of Defense receives the name of Pentagon by the shape of its main building. It is in the arlington county , in Virginia , and has five floors.
The building of Pentagon it was built between 1941 and 1943 . They are currently working there 23,000 people , between civilians and military. Thanks to your 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 US government demanded that Google erase the images of the Pentagon that it had captured for use on Google Maps. In the same way, it is rumored that many countries fear that this popular service will reveal the strategic locations of their headquarters and secret centers of investigation.
The September 11 attack
After the disastrous September 11, 2001, the government American made an official statement of his version of events, although many people believe that the truth is very different. For example, it is questioned that such a large plane traveling at a speed of 400 kilometers per hour has not caused major damage. In addition, the absence of photos of the remains of the ship gives rise to the possibility of a staging.
All this contrasts with the variety of images and videos that were released from the twin towers, which allowed journalists to analyze the attack in detail and depth. The government did not authorize the capture of tests of any kind in the case of the Pentagon, but was responsible for disseminating his 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 be questioned, inconsistencies that reinforce the idea of a montage. There are those who think that damage real were much older, 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.