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6-4 Chapter 6: Using the Curves Toolbox
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© 1997, 1999 Texas Instruments Incorporated
Conic
The
Conic
tool creates a parabola, hyperbola, or ellipse defined by five points. Each point can
assume a new definition, depending on its location on the conic.
Creating a conic
1.
Select
Conic
from the
Curves
toolbox.
2.
Click to create or select the five points.
Note:
After placement of three points, the conic is
drawn to aid you in placing the remaining points.
Create three points.
Shape with the fourth point.
Complete with the fifth point.
Modifying a conic
Move a conic by grabbing it away from its defining points,
and dragging it to a new location. If any of the points are
dependent, the conic also changes.
Modify the conic by dragging any of its five points.
Note:
Depending on the placement of the points, the
conic will be an ellipse, a hyperbola, or a parabola.
Drag any point to reshape.
Examples
Conics in the coordinate plane:
This hyperbola
This ellipse
This hyperbola
This parabola
This ellipse