Texas Instruments TI-89 User Manual page 12

Learning the Basics
Dragging Objects
Hint: To lock the cursor
in drag mode, press:
2 [
]
TI-89: a-lock
TI-92 Plus /
2 ‚
Voyage™ 200 PLT:
Positioning a
Construction
Multi-Step
Constructions
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
(continued)
A dependent object is an object constructed using an independent
object (or another dependent object). Dependent objects cannot be
moved (dragged) or modified directly. You can move or modify them
indirectly by moving the basic points or independent objects
responsible for their existence.
You can move constructed objects that you define with the
tool anywhere in the plane. For example, to reposition a constructed
object:
1. Construct a triangle as previously
described on page 5.
2. Press ƒ and select
1:Pointer
3. Position the (+) cursor until it
changes to the (å) cursor.
The message "
THIS TRIANGLE"
appears.
4. Press and hold
j
TI-89:
TI-92 Plus / Voyage 200 PLT:
to use the dragging hand then press
and hold B to move the triangle to
the right.
To scroll the drawing window to anywhere within the virtual
working area (see page 58), press 2 and the cursor pad at the same
time. The default position of the active drawing window is at the
center of the virtual working area.
1. Construct several geometric
objects as shown.
2. Press ƒ and select
1:Pointer
3. Press and hold 2 then press
the cursor pad to scroll all
objects in the active drawing
window.
You perform multi-step constructions by repeating the construction
of individual points described in this section. Lines require one point
and a direction, line segments require two points, triangles and arcs
require three points, and polygons require n points where n is
greater than two.
.
‚
.
open hand
scroll cursor
Pointer
8