COORDINATE GEOMETRY

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Across
  1. 7. A system of naming points using two perpendicular axes
  2. 8. The vertical distance of a point from the x-axis
  3. 9. A flat surface extending infinitely in all directions
  4. 10. The mathematician who gave the Cartesian system
Down
  1. 1. The vertical line in the Cartesian system
  2. 2. A set of values showing the position of a point in the plane.
  3. 3. The point with coordinates (0,0)
  4. 4. The horizontal line in the Cartesian system
  5. 5. The perpendicular length between two points
  6. 6. The distance of a point from the y-axis