Select the center point M and enter the radius in the text field of the appearing dialog window (also see command Circle).
Selecting a point M and a point P defines a circle with center M through P (also see command Circle).
Note: The circle’s radius is the distance MP.
Selecting three points A, B, and C defines a circle through these points (also see command Circle).
Note: If the three points lie on one straight line, the circle degenerates to this line.
UK English: Compasses
Select a segment or two points to specify the radius. Then, click on a point that should be the center of the new circle.
Selecting five points produces a conic section through these points (also see command Conic).
Note: If four of these five points lie on a line, the conic section is not defined.
Select the two foci of the ellipse. Then, specify a third point that lies on the ellipse (also see command Ellipse).
Select the two foci of the hyperbola. Then, specify a third point that lies on the hyperbola (also see command Hyperbola).
Select a point and the directrix of the parabola (also see command Parabola).