History of Conic section

	Revision 15 . . (edit) December 10, 2001 9:44 am by (logged).191.126.xxx [corrected my own factual correction -Xplat]
	Revision 14 . . December 10, 2001 7:56 am by Xplat [Small factual and terminology corrections (see also 'parabola') plus copyediting.]
	Revision 13 . . (edit) October 23, 2001 1:51 am by Zundark [powers are written as superscripts, not subscripts]

---

Difference (from prior major revision) (minor diff, author diff)

Changed: 1c1,3

Lines that form at the intersection of an infinite conic surface and a plane. If the intersection is a [closed curve]?, the section is called ellipse (of which the circle is a special case in which the plane is exactly perpendicular to the axis of the cone). If the plane is parallel to the axis of the cone, the section is called parabola. Finally, if the intersection is an open curve, and the plane is not parallel to the axis of the cone, the figure is an hyperbola.

Curves that form at the intersection of an infinite conic surface and a plane. If the intersection is a [closed curve]?, the section is called an ellipse (of which the circle is a special case in which the plane is exactly perpendicular to the axis of the cone). If the plane is parallel to any tangent plane of the cone, the section is called a parabola. Finally, if the intersection is an open curve, and the plane is not parallel to the axis of the cone, the figure is an hyperbola.

Added: 4a7,8

Added: 5a10

Added: 6a12

Added: 7a14

Added: 8a16

Added: 9a18

Added: 10a20

Added: 11a22

Added: 12a24

Added: 13a26

Added: 14a28

Added: 15a30

Added: 16a32

Added: 17a34

Added: 20a38,40

Added: 21a42

Added: 23a45,46

Added: 24a48

Added: 25a50

Removed: 27d51

Very good visuals, thank you. RoseParks

Added: 28a53

Very good visuals, thank you. RoseParks