Cartesian coordinates
The four quadrants of theCartesian coordinate system. The arrows on the axes indicate that they extend infinitely in their respective directions.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Cartesian Coordinate System."
https://en.wikipedia.org/wiki/Cartesian_coordinate_system
Wikipedia
CC BY-SA 3.0.