1.
a 90º arc representing one fourth of the circumference of a circle
2.
the area bounded by a quadrant and the two perpendicular lines that connect it to the center of the circle
3.
any one of the four sections into which the perpendicular axes of a coordinate system divide a two-dimensional surface
4.
any one of the four approximately equal parts into which an area or a surface is divided by two real or imaginary perpendicular lines
5.
an instrument with a movable sighting mechanism attached to a 90-degree arc, formerly used in astronomy and navigation to measure the angles and altitudes of stars
6.
a mechanical device or machine part in the shape of a quarter of a circle
1.
a 90º arc representing one fourth of the circumference of a circle
2.
the area bounded by a quadrant and the two perpendicular lines that connect it to the center of the circle
3.
any one of the four sections into which the perpendicular axes of a coordinate system divide a two-dimensional surface
4.
any one of the four approximately equal parts into which an area or a surface is divided by two real or imaginary perpendicular lines
5.
an instrument with a movable sighting mechanism attached to a 90-degree arc, formerly used in astronomy and navigation to measure the angles and altitudes of stars
6.
a mechanical device or machine part in the shape of a quarter of a circle