- AAnti-clockwise
- BClockwise
- CTop to bottom
- DLeft to right
Step-by-Step Solution
Quadrants I, II, III, IV are numbered anti-clockwise (counter-clockwise) beginning from the top-right.
Answer: A) Anti-clockwise
The quadrants are numbered in which direction, starting from the top-right region?
Class 9Coordinate GeometryCoordinate Geometry
Key idea: Identifying quadrants quickly
Just look at the signs:
| Quadrant | sign | sign | Example |
|---|---|---|---|
| I | + | + | (3, 4) |
| II | − | + | (−3, 4) |
| III | − | − | (−3, −4) |
| IV | + | − | (3, −4) |
**Memory trick** (anti-clockwise from top-right): I is +/+; rotate one quadrant counter-clockwise → flip the appropriate sign each step.
| Quadrant | sign | sign | Example |
|---|---|---|---|
| I | + | + | (3, 4) |
| II | − | + | (−3, 4) |
| III | − | − | (−3, −4) |
| IV | + | − | (3, −4) |
**Memory trick** (anti-clockwise from top-right): I is +/+; rotate one quadrant counter-clockwise → flip the appropriate sign each step.
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