Part of the surface of a sphere bounded by minor arcs of three great circles.

### Properties

- A spherical triangle is subtended by a polyhedral angle whose vertex is the centre of the sphere.
- The sum of the degree measures of the interior angles of a spherical triangle ranges from 180° to 540°.
- A spherical triangle can be a right spherical triangle, which helps to conceptualize spherical trigonometry.

### Example