Texas Instruments TI-89 - Rotating and Dilating Objects

TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App 38
The
Rotate
tool in the
Pointer
menu rotates an object about its
geometric center or a defined point.
To rotate an object about its geometric
center:
1.
Create a triangle as shown in this
example.
2.
Press
ƒ
and select
2:Rotate
.
3.
Point to the object (not a point) and
drag in the direction that you want to
rotate the object.
Drag the object around its
geometric center
Complete the rotation.
To rotate an object about a defined
point:
1.
Create a triangle and a point as
shown in this example.
2.
Press
ƒ
and select
2:Rotate
.
3.
Select the rotation point. The point
will blink on and off.
4.
Point to the object and drag in the
direction that you want to rotate the
object.
Select the rotation point and
grab the object to rotate.
Drag the object around the
point.
Complete the rotation.
Rotating and Dilating Objects
The
Pointer
toolbar menu contains tools to rotate and dilate
objects by freehand manipulation. The
Transformations
toolbar
menu contains tools for rotating and dilating objects using
specific values to create translated images.
Rotating Objects by
Freehand
Hint:
Press and hold
TI-89
:
j
TI-92 Plus /
Voyage™ 200 PLT:
‚
while pressing the cursor
pad.
Note:
Move the cursor to an
unoccupied location and
press
¸
to deselect the
rotation point.