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Distances from center are conserved. Used as the emblem of the United Nations, extending to 60° S. c. 580 BC: Gnomonic: Azimuthal Gnomonic Thales (possibly) All great circles map to straight lines. Extreme distortion far from the center. Shows less than one hemisphere. 1772 Lambert azimuthal equal-area: Azimuthal Equal-area Johann Heinrich Lambert
The Encyclopedia of Triangle Centers (ETC) is an online list of thousands of points or "centers" associated with the geometry of a triangle. This resource is hosted at the University of Evansville . It started from a list of 400 triangle centers published in the 1998 book Triangle Centers and Central Triangles by Professor Clark Kimberling .
This category is for points that are considered as the centers of objects for some purpose. Subcategories This category has the following 4 subcategories, out of 4 total.
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In geometry, a triangle center or triangle centre is a point in the triangle's plane that is in some sense in the middle of the triangle. For example, the centroid , circumcenter , incenter and orthocenter were familiar to the ancient Greeks , and can be obtained by simple constructions .
In geometry, a triangle center is a point constructed from a triangle in a way that is independent of the triangle's placement and scale. Pages in category "Triangle centers" The following 37 pages are in this category, out of 37 total.
In mathematics and physics, the centroid, also known as geometric center or center of figure, of a plane figure or solid figure is the arithmetic mean position of all the points in the surface of the figure. [further explanation needed] The same definition extends to any object in -dimensional Euclidean space. [1]
the mean center, also known as the centroid or center of gravity; the median center, which is the intersection of the median longitude and median latitude; the geometric median, also known as Weber point, Fermat–Weber point, or point of minimum aggregate travel. A further complication is caused by the curved shape of the Earth.