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spherical triangle

noun

, Geometry.
  1. a triangle formed by arcs of great circles of a sphere.


spherical triangle

noun

  1. a closed geometric figure formed on the surface of a sphere that is bounded by arcs of three great circles


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Word History and Origins

Origin of spherical triangle1

First recorded in 1575–85
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Example Sentences

The sum of the interior angles of a spherical triangle is always greater than two right angles, and increases with the area.

The sum of the angles of a spherical triangle is greater than 180° and less than 540°.

The problem then resolves itself in the solution of a spherical triangle.

The area of a spherical triangle is equal to the area of a lune whose angle is half the triangle's spherical excess.

This is also easily calculated by the same spherical triangle.

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