• (mathematics) The four regions of the Cartesian plane bounded by the x-axis and y-axis.
  • One of the four sections made by dividing an area with two perpendicular lines.
  • (nautical) A measuring device with a graduated arc of 90° used in locating an altitude.
  • (geometry) One fourth of a circle or disc; a sector with an angle of 90°.

Leave a Reply

Your email address will not be published.