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  2. Missing square puzzle - Wikipedia

    en.wikipedia.org/wiki/Missing_square_puzzle

    The apparent paradox is explained by the fact that the side of the new large square is a little smaller than the original one. If θ is the angle between two opposing sides in each quadrilateral, then the ratio of the two areas is given by sec 2 θ. For θ = 5°, this is approximately 1.00765, which corresponds to a difference of about 0.8%.

  3. Category:Straight lines defined for a triangle - Wikipedia

    en.wikipedia.org/wiki/Category:Straight_lines...

    Pages in category "Straight lines defined for a triangle" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. A.

  4. Line segment - Wikipedia

    en.wikipedia.org/wiki/Line_segment

    A closed line segment includes both endpoints, while an open line segment excludes both endpoints; a half-open line segment includes exactly one of the endpoints. In geometry, a line segment is often denoted using an overline above the symbols for the two endpoints, such as in AB. [1] Examples of line segments include the sides of a triangle or ...

  5. List of two-dimensional geometric shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_two-dimensional...

    Toggle Generally composed of straight line segments subsection. 1.1 Polygons with specific ... Primitive Heronian triangle; Right triangle. 30-60-90 triangle ...

  6. Concurrent lines - Wikipedia

    en.wikipedia.org/wiki/Concurrent_lines

    The three splitters concur at the Nagel point of the triangle. Any line through a triangle that splits both the triangle's area and its perimeter in half goes through the triangle's incenter, and each triangle has one, two, or three of these lines. [2] Thus if there are three of them, they concur at the incenter.

  7. One Piece - Wikipedia

    en.wikipedia.org/wiki/One_Piece

    Additionally, One Piece is the only work whose volumes have ranked first every year in Oricon's weekly comic chart existence since 2008. [150] [151] One Piece has also sold well in North America, charting on Publishers Weekly ' s list of best-selling comics for April/May 2007 and numerous times on The New York Times Manga Best Seller list.

  8. Central line (geometry) - Wikipedia

    en.wikipedia.org/wiki/Central_line_(geometry)

    Let ABC be a plane triangle and let x : y : z be the trilinear coordinates of an arbitrary point in the plane of triangle ABC.. A straight line in the plane of ABC whose equation in trilinear coordinates has the form (,,) + (,,) + (,,) = where the point with trilinear coordinates (,,): (,,): (,,) is a triangle center, is a central line in the plane of ABC relative to ABC.

  9. Simson line - Wikipedia

    en.wikipedia.org/wiki/Simson_line

    The Simson line LN (red) of the triangle ABC with respect to point P on the circumcircle. In geometry, given a triangle ABC and a point P on its circumcircle, the three closest points to P on lines AB, AC, and BC are collinear. [1] The line through these points is the Simson line of P, named for Robert Simson. [2]