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The  - and  -axes divide the  -plane in four right-angle domains which are called the quadrants of the plane. They are numbered going round the origin in anticlockwise direction so that
is the first quadrant,
the second quadrant, and so on.
Naturally, one can speak of the quadrants of the complex plane, too.
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See Also: right angle, convex angle
| Other names: |
quarter-plane |
| Also defines: |
1st quadrant, 2nd quadrant, 3rd quadrant, 4th quadrant |
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Cross-references: complex plane, origin, plane, domains
There are 15 references to this entry.
This is version 10 of quadrant, born on 2004-10-04, modified 2007-04-09.
Object id is 6293, canonical name is Quadrant.
Accessed 12618 times total.
Classification:
| AMS MSC: | 51N20 (Geometry :: Analytic and descriptive geometry :: Euclidean analytic geometry) |
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Pending Errata and Addenda
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