Checking Properties Of Objects - Texas Instruments TI-89 User Manual

Checking Properties of Objects

Editing Check
Property Text
Determining If
Points Are Collinear
Tip: Position the text box to
the desired location before
pressing ¸ to display the
result.
Note: The displayed
property changes when the
third point (center point) is
no longer collinear with the
endpoints of the segment.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
The toolbar menu contains the
Measurement
tool, which allows you to verify specific properties related to a
construction.
For all properties described in this section, you can edit the
text using the
Property Comment
result.
The tool verifies whether or not three selected points lie on
Collinear
the same line.
1. Construct a circle and a segment
such that the segment passes through
the center point and its endpoints are
attached to the circle.
2. Press
2ˆ
TI-89:
TI-92 Plus / Voyage™ 200 PLT:
select
8:Check Property,
select 1:Collinear .
3. Point to each endpoint of the
segment and the center point of the
circle, pressing ¸ each time.
4. Press ¸ to display the property.
5. Drag one of the endpoints of the
segment a few pixels up and a few
pixels down.
Check Property
tool (see page 61) to customize the
ˆ
and then
Select three points.
Check
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