Creating Reflections And Inverse Objects - Texas Instruments TI-89 User Manual

Creating Reflections and Inverse Objects

Creating a
Reflection
Modifying a
Reflection
Note: Because the reflected
image is a dependent
object, you cannot change it
directly.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
The toolbar menu contains the tools
Transformations
associated with transformational geometry for creating
reflections and inverse objects.
The tool creates a mirror image of an object reflected
Reflection
across a line, segment, ray, vector, axis, or side of a polygon.
1. Create a polygon and a line as shown
in this example.
2. Press ‡ and select
4:Reflection
3. Select the object to reflect.
4. Select the line, segment, ray, vector,
axis, or side of a polygon to reflect
the object across.
You can modify a reflected image by changing the original object or
by modifying the line of reflection.
1. Select, reposition, and rotate the line.
The reflected image moves according
to the changes made to the line.
.
Select the object to reflect.
Select the linear object.
The reflected object is
created.
The reflected image is
modified.
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