• Thumbnail for Triangle center
    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,...
    32 KB (3,767 words) - 01:48, 29 March 2024
  • Thumbnail for Centroid
    Centroid (redirect from Triangle centroid)
    Archimedes learned the theorem that the medians of a triangle meet in a point—the center of gravity of the triangle—directly from Euclid, as this proposition is...
    25 KB (3,925 words) - 04:17, 5 March 2024
  • Thumbnail for Triangle
    A triangle is a polygon with three corners and three sides, one of the basic shapes in geometry. The corners, also called vertices, are zero-dimensional...
    56 KB (8,344 words) - 02:58, 14 February 2024
  • Thumbnail for Texas Triangle
    majority of the state's population. The Texas Triangle is formed by the state's four main urban centers, Austin, Dallas-Fort Worth, Houston, and San Antonio...
    18 KB (1,405 words) - 18:21, 23 March 2024
  • Thumbnail for Incircle and excircles
    incircle is a triangle center called the triangle's incenter. An excircle or escribed circle of the triangle is a circle lying outside the triangle, tangent...
    34 KB (5,033 words) - 05:56, 10 March 2024
  • Encyclopedia of Triangle Centers (ETC) is an online list of thousands of points or "centers" associated with the geometry of a triangle. It is maintained...
    5 KB (251 words) - 02:47, 7 February 2024
  • Thumbnail for Equilateral triangle
    {3}}{6}}a} or r=R2{\displaystyle r={\frac {R}{2}}} The geometric center of the triangle is the center of the circumscribed and inscribed circles The altitude (height)...
    28 KB (3,496 words) - 18:32, 31 January 2024
  • Thumbnail for Triangle Center
    The Triangle Center is primarily an office complex with several restaurants and a coffee shop in downtown Lexington, Kentucky. Originally envisioned as...
    2 KB (268 words) - 02:09, 21 January 2024
  • Thumbnail for Acute and obtuse triangles
    acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle...
    13 KB (2,152 words) - 02:15, 9 October 2023
  • Thumbnail for Altitude (triangle)
    In geometry, an altitude of a triangle is a line segment through a vertex and perpendicular to a line containing the side opposite the vertex. This line...
    26 KB (3,436 words) - 18:33, 21 March 2024
  • Thumbnail for Bermuda Triangle
    The Bermuda Triangle, also known as the Devil's Triangle, is an urban legend focused on a loosely defined region in the western part of the North Atlantic...
    56 KB (6,147 words) - 22:34, 27 February 2024
  • Thumbnail for Triangle Town Center
    Triangle Town Center is a shopping mall in Raleigh, North Carolina. It is located in North Raleigh off U.S. Highway 1 (Capital Boulevard) and Interstate...
    6 KB (444 words) - 01:04, 11 February 2024
  • circumcircle of a triangle is a circle that passes through all three vertices. The center of this circle is called the circumcenter of the triangle, and its radius...
    25 KB (4,112 words) - 08:05, 5 March 2024
  • Thumbnail for Coral Triangle
    The Coral Triangle (CT) is a roughly triangular area in the tropical waters around the Philippines, Indonesia, Malaysia, Papua New Guinea, the Solomon...
    28 KB (2,938 words) - 21:31, 2 March 2024
  • Thumbnail for Incenter
    Incenter (category Triangle centers)
    the incenter of a triangle is a triangle center, a point defined for any triangle in a way that is independent of the triangle's placement or scale....
    15 KB (2,072 words) - 10:39, 25 January 2024
  • Thumbnail for Isosceles triangle
    In geometry, an isosceles triangle (/aɪˈsɒsəliːz/) is a triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides...
    37 KB (4,037 words) - 07:28, 5 January 2024
  • Thumbnail for Triangle Shirtwaist Factory fire
    The Triangle Shirtwaist Factory fire in the Greenwich Village neighborhood of Manhattan, New York City, on Saturday, March 25, 1911, was the deadliest...
    62 KB (6,932 words) - 15:20, 19 February 2024
  • Thumbnail for Euler line
    Euler line (category Straight lines defined for a triangle)
    any triangle, the orthocenter, circumcenter and centroid are collinear. This property is also true for another triangle center, the nine-point center, although...
    18 KB (2,403 words) - 01:31, 7 May 2023
  • Thumbnail for Modern triangle geometry
    mathematics, modern triangle geometry, or new triangle geometry, is the body of knowledge relating to the properties of a triangle discovered and developed...
    29 KB (3,712 words) - 15:09, 21 March 2023
  • Thumbnail for Fermat point
    three points. The Fermat point of a triangle with largest angle at most 120° is simply its first isogonic center or X(13)[citation needed], which is constructed...
    20 KB (2,917 words) - 08:05, 5 March 2024
  • Thumbnail for Apothem
    For an equilateral triangle, the apothem is equivalent to the line segment from the midpoint of a side to the triangle's center. The apothem a can be...
    5 KB (589 words) - 17:23, 17 February 2024
  • Thumbnail for Research Triangle
    The Research Triangle, or simply The Triangle, are both common nicknames for a metropolitan area in the Piedmont region of the U.S. state of North Carolina...
    63 KB (5,016 words) - 02:25, 29 March 2024
  • Thumbnail for Right triangle
    A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular...
    18 KB (2,748 words) - 20:05, 25 March 2024
  • center is a special point associated with a plane triangle. It is defined as the center of mass of the perimeter of the triangle. The Spieker center of...
    6 KB (703 words) - 07:31, 28 December 2023
  • Thumbnail for Reuleaux triangle
    A Reuleaux triangle [ʁœlo] is a curved triangle with constant width, the simplest and best known curve of constant width other than the circle. It is formed...
    56 KB (6,454 words) - 22:24, 9 January 2024
  • In triangle geometry, the Steiner point is a particular point associated with a triangle. It is a triangle center and it is designated as the center X(99)...
    8 KB (907 words) - 21:06, 27 May 2022
  • Thumbnail for Feuerbach point
    The Feuerbach point is a triangle center, meaning that its definition does not depend on the placement and scale of the triangle. It is listed as X(11)...
    9 KB (1,101 words) - 17:51, 7 January 2023
  • In geometry, the Yff center of congruence is a special point associated with a triangle. This special point is a triangle center and Peter Yff initiated...
    7 KB (596 words) - 14:28, 14 January 2024
  • Thumbnail for Morley's trisector theorem
    in any triangle, the three points of intersection of the adjacent angle trisectors form an equilateral triangle, called the first Morley triangle or simply...
    13 KB (1,934 words) - 14:48, 14 January 2024
  • Napoleon points (category Triangle centers)
    Napoleon points are triangle centers and they are listed as the points X(17) and X(18) in Clark Kimberling's Encyclopedia of Triangle Centers. The name "Napoleon...
    14 KB (1,558 words) - 08:06, 5 March 2024