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The midpoint theorem, midsegment theorem, or midline theorem states that if the midpoints of two sides of a triangle are connected, then the resulting line segment will be parallel to the third side and have half of its length.
The octant of a sphere is a spherical triangle with three right angles.. Spherical trigonometry is the branch of spherical geometry that deals with the metrical relationships between the sides and angles of spherical triangles, traditionally expressed using trigonometric functions.
Shoelace scheme for determining the area of a polygon with point coordinates (,),..., (,). The shoelace formula, also known as Gauss's area formula and the surveyor's formula, [1] is a mathematical algorithm to determine the area of a simple polygon whose vertices are described by their Cartesian coordinates in the plane. [2]
Solution of triangles (Latin: solutio triangulorum) is the main trigonometric problem of finding the characteristics of a triangle (angles and lengths of sides), when some of these are known.
The exterior angle theorem is Proposition 1.16 in Euclid's Elements, which states that the measure of an exterior angle of a triangle is greater than either of the measures of the remote interior angles.
When Pedernera transferred to Atlanta, a young Alfredo Di Stéfano took his place. [51] A false 9 was also utilised by Hungary at the beginning of the 1950s, with striker Nándor Hidegkuti acting in the role as a deep-lying centre forward. [52] [53] In 1953, English football was astounded by the Hungarian team which beat England 6–3 at ...
Siku (also spelled Siqu) (Aymara siku or siqu a kind of flute, also spelled Sekho, Seko) [2] or Siq'u (Quechua for slidable rope; perforated) [3] are the names of a mountain in the Bolivian Andes which reaches a height of approximately 4,740 m (15,550 ft).