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Illustration of circle with quadrant and 60 degree arc.

Quadrant of Circle With 60 degree Arc

Illustration of circle with quadrant and 60 degree arc.

Illustrations of a circle with segment, semicircle, sector, quadrant, and central angles drawn.

Circle with Segment, Semicircle, Sector, Quadrant, and Central Angle

Illustrations of a circle with segment, semicircle, sector, quadrant, and central angles drawn.

"A quadrant, or one fourth of a circle. The oblique lines indicate various angles with the base. The heavy line indicates the inclination of the earth's axis as compared with the plane of its orbit, which is represented by the base." -Wiswell, 1913

Inclination of Earth's Axis

"A quadrant, or one fourth of a circle. The oblique lines indicate various angles with the base. The…

"Elevation and section of Thomson's Quadrant Electrometer." — Encyclopedia Britannica, 1893

Quadrant Electrometer

"Elevation and section of Thomson's Quadrant Electrometer." — Encyclopedia Britannica, 1893

A point lies in the first quadrant if the plan lies below, the elevation above the axis; in the second if plan and elevation both lie above; in the third if the plan lies above, the elevation below; in the the fourth if plan and elevation both lie below the axis.

Quadrants

A point lies in the first quadrant if the plan lies below, the elevation above the axis; in the second…

"QUARTERED. A shield divided into four equal parts by a cross is said to be quartered. The quarter occupying the dexter chief is marked 1, or the first quarter; that occupying the sinister chief, 2; the dexter base, 3; the sinister base, 4; as in the annexed example." -Hall, 1862

Quartered

"QUARTERED. A shield divided into four equal parts by a cross is said to be quartered. The quarter occupying…

A sphere with quadrants and poles. "A point on the surface of a sphere, which is at the distance of a quadrant from each of two other points, not the extremities of a diameter, is a pole of the great circle passing through theses points."

Sphere With Quadrants and Poles

A sphere with quadrants and poles. "A point on the surface of a sphere, which is at the distance of…

A sphere with quadrants drawn on it.

Sphere With Quadrants

A sphere with quadrants drawn on it.