TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App  5 
 
All objects are constructed using one or more points. You create or 
select points when a tool is active. The order of operation is: 
1. 
Select a construction tool. 
2. 
Create or select the required points that define the object. 
To create a point, select the 
Point
 tool and press 
¸
. You can 
create points anywhere in the plane when the construction pencil (
#
) 
is active. For example, to construct the two points in the plane 
below: 
1. 
Press 
„
 and select 
1:Point
. 
2. 
Move the (
#
) cursor to the 
desired location and press 
¸
 to create the first point. 
3. 
To create the second point, 
press the right side of the 
cursor pad (
B
) until the 
cursor is at the desired 
location then press 
¸
. 
 
 
 first point second point 
All other objects require multiple points to complete their 
construction. For example, to construct a triangle, you create three 
points as shown below: 
1. 
Press 
…
 and select 
3:Triangle
. 
2. 
Move the (
#
) cursor to the desired 
location and press 
¸
 to define 
the first point. 
3. 
Move the cursor to another location, 
and press 
¸
 to define the second 
point. 
4. 
Move the cursor to the third location 
and press 
¸
 again to complete 
the triangle. 
 
 
first point  second point 
 
Learning the Basics
 
(continued)
 
Placing Points 
Creating a Simple 
Triangle 
third point