Portion of the area of a surface of a sphere equal to \(\frac{1}{720}\) of the whole surface of the sphere.

In the sexagesimal system, the spherical degree is defined by a birectangular spherical triangle in which the third angle measures 1°.

Portion of the area of a surface of a sphere equal to \(\frac{1}{720}\) of the whole surface of the sphere.

In the sexagesimal system, the spherical degree is defined by a birectangular spherical triangle in which the third angle measures 1°.