Conic Section Tools

mode_circlepointradius_32 Circle with Center and Radius

Select the center point M and enter the radius in the text field of the appearing dialog window (also see command Circle).

mode_circle2_32 Circle with Center through Point

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.

mode_circle3_32 Circle through Three Points

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.

mode_compasses_32 Compass

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.

mode_conic5_32 Conic through Five Points

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.

mode_ellipse3_32 Ellipse

Select the two foci of the ellipse. Then, specify a third point that lies on the ellipse (also see command Ellipse).

mode_hyperbola3_32 Hyperbola

Select the two foci of the hyperbola. Then, specify a third point that lies on the hyperbola (also see command Hyperbola).

mode_parabola_32 Parabola

Select a point and the directrix of the parabola (also see command Parabola).


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