Octant

Any one of the 8 portions of space determined by the 3 coordinate planes.

Angle

a unit of angle measure equal to 1/8 circle, 45°, or π/4 radians.

Solid Angle

One octant is 1/8 sphere, or π/2 steradians, or about 5156.6 square degrees.

See also: Coordinates.

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Subjects: Mathematics