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

Word History and Origins

Origin of spherical triangle¹

First recorded in 1575–85

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

This is also easily calculated by the same spherical triangle.

From Project Gutenberg