In this video you will learn about the 5 sided polygon called a Pentagon. A pentagon is a 5 sided polygon A polygon is a closed 2D shape with straight lines. Circles and shapes that include curves are not polygons A regular pentagon has 5 equal sides and 5 equal angles. The general formula for the sum of all interior angles of a polygon (n-2)180 n = the number of sides (5-2) = 3 x 180 = 540 The degree measure of the interior angles equals sum of all interior angles divided by the number of sides 540/5 = 108 The measures of the central angle equals 360/5 = 72 A pentagon has 5 diagonals You can Find the number of diagonals by using, n (n - 3) / 2 n = number vertices 5(5-3 )/2= 5 times 2 =10/2=5 Area If the apothem is known area = ½ perimeter times apothem If you do not know the Apothem length then not find the apothem using Apothem = side/ 2Tan ( 180/number sides) Once you know Apothem then use ½ Perimeter times Apothem Pentagons can also be irregular which means the shape does not have equal sides or angles
The Polygon Song is a Shape Song Video that teaches the Polygons: Triangle, Quadrilateral, Pentagon, Hexagon, Heptagon, Octagon, Nonagon, and Decagon. These Shape Videos teach the Shape Names, Geometry Skills, Math Vocabulary, Shape Recognition, and use Audio, Visual, and Kinesthetic Learning. Download the Shape Videos: http://havefunteaching.com/videos/shape-videos/ Download the Shape Songs: http://havefunteaching.com/songs/shape-songs/
Learn how to solve for an unknown variable in the interior angle of a polygon. A polygon is a plane shape bounded by a finite chain of straight lines. The interior angle of a polygon is the angle between two sides of the polygon. The sum of the interior angles of a regular polygon is given by the formula: 180(n - 2) degrees, where n is the number of sides of the polygon. Given the expressions for the interior angles of a polygon, to find an unknown variable, we equate the sum of the expressions for the angles to the value of 180(n - 2) degrees, where n is the number of sides of the polygon and then solve for the unknown variable. #geometry #polygons
how to draw pentagon without using protractor or angle tool. Pentagon is geometrical shape that have 5 sides equal and 5 angles. This is a best and easy tutorial for learning a pentagon. Its a well know shape which is used for geometrical designs, stars and also different kinds of 3d models. Thanks for watching, Nalemitho Soomro Please visit my another best channel "Arts and Crafts" https://www.youtube.com/artsandcrafts geometry how to draw learn geometry drawing kids geometry draw learn to draw how to classes online classes pentagon accurate pentagon correct pentagon how to draw how to draw a pentagon pentagon with compas correct pentagon with compas draw pentagon draw accurate pentagon shapes geometrical shapes how to draw accurate shapes geometry lessons drawing a pentagon with a compas how to draw a pentagon using compas how to draw a pentagon shape
Showing a generalized way to find the sum of the interior angles of any polygon Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/parallel-and-perpendicular-lines/triang_prop_tut/e/angles_of_a_polygon?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://www.khanacademy.org/math/geometry/parallel-and-perpendicular-lines/triang_prop_tut/v/sum-of-the-exterior-angles-of-convex-polygon?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the previous lesson? https://www.khanacademy.org/math/geometry/parallel-and-perpendicular-lines/triang_prop_tut/v/finding-more-angles?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Geometry channel: https://www.youtube.com/channel/UCD3OtKxPRUFw8kzYlhJXa1Q?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Regular pentagon given the measurement of one of it´s side, using a compass and a 45º set-square. This YouTube channel is dedicated to teaching people how to improve their technical drawing skills. It focusses on drawing figures from the geometric plane to descriptive geometry and also different systems of technical drawing representation. If you subscribe, click, like or leave a comment you will be helping us to grow our channel and help more people with their technical drawing skills. Thank you in advance. Dubbed by Frank Shaw. Music by Antonio Fernández Ruiz. http://antoniofernandez.es/ #Geometry #HowtoDraw
Learn how to find the Interior and Exterior Angles of a Polygon in this free math video tutorial by Mario's Math Tutoring. We discuss regular and nonregular polygons and go over the forumulas as well as example problems. 0:21 Formula for the Sum of Interior Angles in a Polygon 1:14 Formula for the Measure of 1 Interior Angle in a Regular Polygon 1:38 Formula for the Measure of 1 Exterior Angle in a Regular Polygon 1:53 Formula for the Sum of All Exterior Angles in a Polygon 2:19 Example 1 Finding Missing Interior Angle Measure 3:13 Example 2 Solving for the Exterior Angle 4:00 Example 3 Finding Interior & Exterior Angle in a Regular Decagon 5:20 Example 4 Finding the Type of Polygon Given the Sum of the Interior Angles Related Videos: Polygons Finding Number of Sides https://youtu.be/1cNuas5hPTk Finding an Exterior Angle in a Polygon https://youtu.be/80LA3zcmabY Find the Area of Regular Polygons https://youtu.be/80LA3zcmabY Looking to raise your math score on the ACT and new SAT? Check out my Huge ACT Math Video Course and my Huge SAT Math Video Course for sale at http://mariosmathtutoring.teachable.com For online 1-to-1 tutoring or more information about me see my website at: http://www.mariosmathtutoring.com Learn Algebra 1 Lesson by Lesson in my "Learn Algebra 1" video course for sale. 87 Lessons teaching you step by step Algebra 1. Check out the 13 free lessons(1 from each chapter) https://mariosmathtutoring.teachable.com/p/learn-algebra-1-video-course * Organized List of My Video Lessons to Help You Raise Your Scores & Pass Your Class. Videos Arranged by Math Subject as well as by Chapter/Topic. (Bookmark the Link Below) http://www.mariosmathtutoring.com/free-math-videos.html
A video on the sum of internal angles of a polygon and on the sum of exterior angle measures.
In a summer school edition of Yay Math, we wade into understanding polygons, and name a bunch of them from 3 sides up to 12. Then, we find the number of triangles "hiding" inside every polygon. That leads us to uncover the formula for the sum of all interior angles, which is 180(n–2)... DON'T WORRY, we'll explain that! Then, we define "regular" as a polygon having all equal sides, and wrap up by learning about the sum of all EXTERIOR angles of any polygon. That sum of all exterior angles is always 360. Yes, we covered a lot of ground, credit to the students, joining me for summer school. YAY MATH! Please visit yaymath.org Videos copyright (c) Yay Math
Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation Finding out what degree the inside angels of a pentagon add up to will require you to measure the angles of each of those five sides. Find out how many degrees the angles of a pentagon add up to with help from a longtime experienced physics educator in this free video clip. Expert: Derek Hullinger Bio: Derek Hullinger received his PhD in physics from the University of Maryland in 2006. Filmmaker: Jeff Goodey Series Description: Physics is a concept that is typically introduced in middle school that will play an important role in a person's academic career through college and beyond. Get tips on physics and math with help from a longtime experienced physics educator in this free video series.