1 Vectors: page 2
2 Conic sections 1: page 35
Move the FOCUS to explore this parabola.[br]Move P anywhere on the curve and see that it is equidistant from the point ([i]a[/i], 0) and the line x + [i]a = 0[/i].
3 Conic sections 2: page 63
In this figure, the intersection of the plane and cone is an ellipse.[br]Move the black point and the Plane tilt slider to adjust the plane. [br]The angle of the cone can be set with the [i]z[/i]-axis angle slider.