The Geometer’s Sketchpad
®
for TI-89, TI-92 Plus, and
© 2000-2002 KCP Technologies, Inc.
18
Voyage™ 200 PLT User Guide and Reference Manual
Drawing
Once a drawing tool—the Point, Compass, Straightedge, or Custom tool—
is chosen, use the
@
cursor controls to move to the location where you
wish to start drawing an object. This can be a blank area, an existing point,
or on an existing object.
Press
¸
to construct a point. (On the TI-89, you may use
M
as a
shortcut for
¸
.)
For objects defined by two points—segments, rays, lines, and circles—use
@
to move to the location where you wish to finish constructing the
object, and press
¸
to construct the second point.
The chosen tool remains active until you choose a different tool.
Dragging
Choose the Arrow tool. You can do this by entering the toolbox
Š
,
(TI-89:
2 Š
) highlighting the Arrow, and pressing
¸
, or you can
simply press
N
to quit the current tool and choose the Arrow.
Use
@
to position the cursor over the object you wish to drag. When it’s
over an object, the cursor will turn into a horizontal arrow.
Press and hold down
‚
(TI-89:
j
) as you move the object with
@
.
See the Commands section for more details about using menu commands.
Sketchpad’s six menus are
ƒ
Edit,
„
Display,
…
Construct,
†
Transform,
‡
Measure, and
ˆ
Graph.
Selecting
To act on objects using menu commands, you’ll need to select them:
1. Choose the Arrow tool.
2. Using the
@
cursor controls, position the cursor over an object.
When it’s over an object, the cursor will turn into a horizontal arrow.
3. Press
¸
. Sketchpad selects the object. Select additional objects
by repeating steps 2 and 3.
Selected objects appear thickened. Previously selected objects will remain
selected as long as you’re selecting objects. Many menu commands depend
on multiple selections. If you press
¸
with the cursor in a blank area,
everything will become deselected. You can also press
N
to deselect
everything.
Choosing Commands
To open a menu, press its assigned function key. To choose a menu item,
press its assigned number or letter, or highlight it using the cursor controls
and press
¸
.
Commands
Again, on the TI-89,
M
may be used as an
alternative to
¸
when
drawing or selecting objects.
