Word origin · etymology
Latin-derived geometric label.
Quadrant comes from Latin quadrans, a fourth part. These systems divide the quadrants between chart angles.
How we know · epistemology
Family of division conventions
These methods share the four angles but divide the spaces between them differently. Shared endpoints do not make their intermediate cusps interchangeable or establish one universal set of house positions.
Connected concepts
Terms used in this explanation
These links connect subjects and terminology. They do not establish a shared historical origin.
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.