Definition of Pentagon in the Definitions.net dictionary. (geometry) A polygon with five sides and five angles. As all the sides of a regular pentagon are equal in length, the formula for the perimeter or circumference of a pentagon is as follows: Perimeter = P = 5a Units, where ‘a’ is the length of the side of the pentagon. In geometry, a pentagon is any five-sided polygon. Please tell us where you read or heard it (including the quote, if possible). Definition Of pentagon. The vertices of a regular icosahedron are those of three mutually orthogonal golden rectangles. See the full definition for pentagon in the English Language Learners Dictionary, Nglish: Translation of pentagon for Spanish Speakers, Britannica English: Translation of pentagon for Arabic Speakers, Britannica.com: Encyclopedia article about pentagon. pentagon rate (Noun) a shape with 5 sides Link to this page: Add or improve a definition. The measure of the interior angle of a regular pentagon is 108 degrees, and the measure of the exterior angle of a regular pentagon is 72 degrees. If all the sides of a pentagon are equal in their lengths and all its angles are equal in their measures, then it a regular pentagon. In geometry, a pentagon is a five-sided polygon with five straight sides and five interior angles that sum up to 540° 540 °. A pentagon shape is a plane figure, or flat (two-dimensional) 5-sided geometric shape. Meaning of Pentagon. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Definition of pentagon. April 29, 2013 by getmathhelp. Pentagon papers definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. 'All Intensive Purposes' or 'All Intents and Purposes'? Properties of regular pentagons. proper noun [NOUN noun] The Pentagon is the main building of the US Defense Department, in Washington. Find its area and perimeter. There was disagreement between the President and, One of my favorites is an untitled work that features a plushy five-point star in shades of light brown enclosed in a red, The effect is a messy storyline that feels engineered to keep season 15’s stale-back-then love, Preceding Orion are the bright autumn constellations Taurus the Bull, with the wonderful Pleiades star cluster, and Auriga, the constellation that looks like a lopsided, At the crime scene Sunday night, yellow police tape formed a, The images that the lines create in a mandala become symbols that can include the, His 6-foot-5 frame towers over the 17-inch rubber, Post the Definition of pentagon to Facebook, Share the Definition of pentagon on Twitter. 'Nip it in the butt' or 'Nip it in the bud'? A convex pentagon is the one that has all its vertices pointing outwards. Definition: A polygon with 5 sides Try this Adjust the pentagon below by dragging any orange dot. Spoken English Program Pentagon Pen"ta*gon (? All the sides of a pentagon meet with each other end to end to form a shape. Delivered to your inbox! pentagon Definition . the building in Washington where the U.S. Defense Department is based, or the U.S. Defense Department itself: The Pentagon is aiming to cut U.S. forces by over 25 percent in the next five years. The word “pentagon” is made up of two words, namely Penta and Gonia, which means five angles. A pentagon may be simple or self-intersecting. Pentagon (n.) 1. a government building with five sides that serves as the headquarters of the United States Department of Defense. Information and translations of Pentagon in the most comprehensive dictionary definitions resource on the web. definitions - Pentagon report a problem. The word pentagon … Test your visual vocabulary with our 10-question challenge! for. Definition of pentagon written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, and count/noncount noun labels. Imagine a collapsed roof of a house. A convex pentagon is one whose vertices, or points, where the sides meet, is pointing outwards as opposed to a concave pentagon whose vertices point inwards. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pentagon.' (noun) A pentagram is an example of a self-intersecting pentagon. 4. Definition of pentagon noun in Oxford Advanced American Dictionary. Examples of polygons include triangle (a three-sided polygon), quadrilateral (a four-sided polygon), pentagon (a five-sided polygon), hexagon (a six-sided polygon), heptagon (a seven-sided polygon), octagon (an eight-sided polygon), and so on. 5. “Pentagon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pentagon. The area of a regular pentagon can also be calculated by dividing it into five equal triangles. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Hence, the area of the pentagon is 75 cm2, and its Perimeter is 25 cm. The length of a regular pentagon's diagonal is φ times its side. Send us feedback. The word 'Pentagon' arises from two words, that are, ‘Penta’ and ‘Gonia,’ meaning five angles. Find its area and perimeter. Learn a new word every day. Pentagon seeks sharper definition of extremist activity as military review continues By Oren Liebermann and Ellie Kaufman , CNN Updated 7:19 PM ET, Fri April 9, 2021 The length of the side of the pentagon = a = 4cm. In a rectangular pentagon, the sum of the measures of the interior angles is 540 degrees. 3. Also find a similar words the begin with the same characters, end with the same characters, anagrams, reverse anagrams, word scrambles and words with similar letters. 2021. The word 'Pentagon' arises from two words, that are, ‘Penta’ and ‘Gonia,’ meaning five angles. There is no known general algorithm to arrange a given number of nodes evenly on a sphere, for any of several definitions of even distribution (see, for example, Thomson problem). A polygon with five sides and five angles. In this article, we will discuss the five-sided polygon, that is, pentagon, along with its shape, properties, types, area, and perimeter. If in a pentagon, the sides aren't of equal lengths and angles aren't of equal measures, then it is an irregular pentagon. A regular pentagon has five Edges and five vertices. Depending on the angles, sides, and vertices of a pentagon, there are different types of polygon shapes, namely: If a pentagon has all five sides of equal lengths, and all the five angles of equal measures, then it is a regular pentagon. 2. the United States military establishment. Perimeter = P = 5 * 4 cm, where a = length of the side of the pentagon, which is 4cm in this particular case. 2. We study several different shapes in Geometry. Find below definitions and meanings of Pentagon. Definition of pentagon noun in Oxford Advanced Learner's Dictionary. pentagon - a shape with 5 sides. Choose the best definition or synonym for the word in bold: "There are some. Look it up now! A regular pentagon has a side of length 5cm and length of apothem as 6cm. Polygon is a two-dimensional (2D) shape composed of interior angles and straight lines. In a pentagon, all the sides meet with each other, that too, from end to end to form its shape. Definition of. The Pentagon created a policy mess nine years ago by trying to tackle "extremism" in the military, and it’s about to get a lot messier. Solutions – Definition, Examples, Properties and Types, Ammonia and Nitric Acid Formulae Properties Preparation, CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. What made you want to look up pentagon? ), n. [Gr. The length of the side of the pentagon = a = 5cm. Definition of Pentagon (Entry 2 of 2) : the U.S. military leadership Examples of pentagon in a Sentence Noun (1) The general attended a meeting at the Pentagon. Hence, the area of the pentagon is 80 cm2, and its Perimeter is 20 cm. What does Pentagon mean? An irregular pentagon is a shape that does not have equal sides and/or angles and therefore does not have specified angles. A concave pentagon is the one that has at least one vertex pointing inwards. Advertizing Merriam Webster. Like the other polygons, including triangles and quadrilaterals such as rectangle, square, to name a few, the pentagon is also a polygon with five sides and five angles. pentagon has definitions from the fields of government,military,mathematics,geometry 1 [ noun ] ... General_Electric 's enormous installations at Louisville and Syracuse , the Pentagon, Boeing in Seattle , Douglas and Lockheed in Los_Angeles , the new automobile assembly plants everywhere - none of these is substantially served by any sort of … The formula for finding the perimeter of a regular pentagon is as follows: Perimeter = P = 5 * 5 cm, where a = length of the side of the pentagon, which is 5cm in this particular case. Synonyms of Pentagon will be presented below each meaning if they are available. Interior angle: 108° Like any regular polygon, to find the interior angle we use the formula (180n–360)/n . Sorry!, This page is not available for now to bookmark. By clicking on the top left command line, you can switch it between a regular and irregular pentagon. 187 were donated in February This month, we are on track to donate 189. home recent additions webmaster page banners feed a child. Internal angle of a regular pentagon is 108 degree. Word:* Part of speech: Definition:* Sample sentence: All definitions are approved by humans before publishing. The sum of the internal angles in a simple pentagon is 540°. The word pentagon comes from a word of Greek origin and serves to identify a polygon consisting of five edges or sides and the same number of angles There is talk of 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°. A plane figure with five straight sides and five angles. Accessed 18 May. The Pentagon definition is - the building in Washington, D.C., that is the headquarters of the U.S. Department of Defense. the U.S. Department of Defense; the U.S. … A regular pentagon has a side of length 4cm and length of apothem as 8cm. A pentagon is a polygon with 5 sides and 5 angles. If we don't currently have any definitions there is a link to check definitions on Google. What does pentagon mean? Pentagon A five-sided building near Washington DC, containing the US Department of Defense and the offices of the US Armed Forces. In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle ) is any five-sided polygon or 5-gon. We already know that the area of a triangle is given by the formula – ½ * Base * Height. Definition and Description of a Pentagon. In an equilateral pentagon, there are five sides of equal lengths. ‘In the second case, if the convex polygon is a pentagon incorporating all five points, then any four of these points can be … In a pentagon, all the sides meet with each other, that too, from end to end to form its shape. Vedantu academic counsellor will be calling you shortly for your Online Counselling session. The formula for finding the area of a pentagon is as follows: Substitute the values of the length of the side of the pentagon and the length of apothem in the formula mentioned above. Government the Pentagon: a building in Arlington, Virginia, having a plan in the form of a regular pentagon, containing most U.S. Defense Department offices. So, we can find the area of a regular pentagon as – 5 * Area of triangle. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Definition of Pentagon A pentagon is one of the many types of polygon having five sides and five angles. Hence, the number of pentagon sides is equal to five. Are you building something up or tearing it down? pentagon (n.) 1. a five-sided polygon. (Placename) the five-sided building in Arlington, Virginia, that houses the headquarters of the US … The US Defense Department is often referred to as the Pentagon....a news conference … A pentagon has quite a few interesting properties, which are as follows: 1. A pentagon is one of the many types of polygon having five sides and five angles. 2. How to use the Pentagon in a sentence. Otherwise, it is an irregular pentagon. Properties of a Pentagon Pentagons can be simple or self-intersection. the headquarters building of the United States Department of Defense. The internal angles in a simple pentagon total 540°. Greek pentagōnon, from neuter of pentagōnos pentagonal, from penta- + gōnia angle — more at -gon, the Pentagon building, headquarters of the Department of Defense. For a pentagon, n=5. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. As you can see from the picture, a pentagon is a closed and flat two-dimensional surfaced shape with five angles and five sides. The formula to find the area of a regular pentagon with a given side and apothem length (the line from the centre of the pentagon to a side, which intersects the side at a right angle, i.e., at 90 degrees) is as follows: Area of Pentagon = A = (5/2) * Length of the Side * Apothem Sq Units. the building in Washington where the US Defense Department is based, or the US Defense Department itself: The Pentagon is aiming to cut US forces by over 25 percent in the next five years. penta`gwnon; penta-(see Penta-) + gwni`a angle: cf. In a pentagon, the sum of the measures of the interior angles is equal to 540 degrees.
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