Creating A Locus - Texas Instruments TI-89 User Manual

Creating a Locus

Creating a Locus
Note: The number of points
calculated in the
construction of the locus is
defined in the Geometry
Format dialog box.
Note: The locus is
dynamically recalculated
when you modify the objects
that define the locus.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
The toolbar menu contains the Locus tool, which
Construction
generates a set of points while a point moves along a path.
The Locus tool creates a set of objects defined by the movement of a
point along a path. A path is any defined object on which a point can
be placed.
1. Construct two circles as shown.
The center point and circumference of
the small circle must be attached to
the circumference of the large circle.
2. Press † and select
A:Locus
3. Select the small circle as the object
for which to construct the locus.
4. Select the center point of the small
circle as the point that lies on a path
and press ¸.
When you select a point on a path
(object), the locus is constructed in
its entirety and is considered a
defined object.
Construct and attach two
circles.
This point indicates that the
circles are attached.
.
Select the object.
Select a point on the path.
The locus is constructed.
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