Texas Instruments TI-89 User Manual page 26

Creating Lines, Segments, Rays, and Vectors
Creating a Ray
Tip: To limit the slope to
15-degree increments,
press ¤ while pressing the
cursor pad.
Creating a Vector
Tip: To limit the slope to
15-degree increments,
press ¤ while pressing the
cursor pad.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
The tool creates a ray defined by an initial endpoint and
Ray
extending infinitely in a specified direction. You can control the
slope of the ray in free space or create the ray to go through another
point.
1. Press „ and select
6:Ray
2. Move the (#) cursor to the desired
location and press ¸ to create
the endpoint of the ray.
3. Position the ray in the desired
orientation using the cursor pad.
4. Press ¸.
The Vector tool creates a vector between two points. A vector is a
segment defined by magnitude and direction with a tail (initial
endpoint) and head (final endpoint).
1. Press „ and select
7:Vector
2. Move the (#) cursor to the desired
location and press ¸ to create
the tail of the vector.
3. Move the pointer to the location for
the head.
4. Press ¸.
(continued)
.
Create a point.
Create the ray.
.
Create the tail.
Create the head.
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