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# spherical triangle

## noun

,

*Geometry.*- a triangle formed by arcs of great circles of a sphere.

spherical triangle

## noun

- 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 triangle^{1}

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.

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

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