ENGINEERING.com > Centroids of Common Shapes Register Home Library Ask@ Jobs Careers Games & Puzzles Software Directories Library Articles Page MyEngineering Blogs Login Videos Go Library Home Article Archive Engineering Marvels Biographies Engineering/Science Laws Calculators Ethics Case Studies Centroids of Common Shapes Register today to get your ENGINEERING.com email account! Discipline Overview Reference Tables Engineering Home Projects Shapes Images Area Textbooks Engineering Top 10 Lists Solar Energy Engineering Triangular Area Quarter–circular area Semicircular area 0 Semiparabolic area Parabolic area Parabolic spandrel http://www.engineering.com/Library/ArticlesPage/tabid/85/articleType/ArticleView/articleId/109/Centroids-of-Common-Shapes.aspx (1 of 2) [12/8/2008 9:19:25 AM] 0 ENGINEERING.com > Centroids of Common Shapes Circular Sector 0 Quarter-circular arc Semicircular arc 0 0 Arc of circle BACK Eng-Tips Forums ABOUT US INVESTORS PRIVACY POLICY ADVERTISE WITH US http://www.engineering.com/Library/ArticlesPage/tabid/85/articleType/ArticleView/articleId/109/Centroids-of-Common-Shapes.aspx (2 of 2) [12/8/2008 9:19:25 AM] CONTACT US List of centroids - Wikipedia, the free encyclopedia Log in / create account List of centroids Article Discussion Edit this page History From Wikipedia, the free encyclopedia It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. The following diagrams depict a list of centroids. A centroid of an object X the intersection of all hyperplanes that divide X in n -dimensional space is into two parts of equal moment about the hyperplane. Informally, it is the "average" of all points of X . Shape Figure Area Triangular area Quarter-circular area Semicircular area Quarter-elliptical area Semielliptical area Semiparabolic area The area inside the ellipse The area between the curve and above the and the axis, from to Parabolic area http://en.wikipedia.org/wiki/List_of_centroids (1 of 3) [1/18/2009 10:42:38 PM] The area between the curve axis and the line List of centroids - Wikipedia, the free encyclopedia The area between the curve Parabolic spandrel and the axis, from and the axis, from to The area between the curve General spandrel to The area between the curve (in polar coordinates) Circular sector and the to pole, from Circular segment Quarter-circular arc The points on the circle and in the first quadrant Semicircular arc The points on the circle and above the The points on the curve (in polar coordinates) Arc of circle axis , from to External links ● [edit] http://www.engineering.com/Library/ArticlesPage/tabid/85/articleType/ArticleView/articleId/109/Centroidsof-Common-Shapes.aspx ● http://www.efunda.com/math/areas/IndexArea.cfm This classical mechanics - related article is a You can expanding it stub help Wikipedia by . Categories: Wikipedia requested diagram images | Mechanics | Physics lists | Introductory physics | Classical mechanics stubs Navigation ● Main page ● Contents http://en.wikipedia.org/wiki/List_of_centroids (2 of 3) [1/18/2009 10:42:38 PM] .