Measuring Objects - Texas Instruments TI-89 User Manual

Measuring Objects

About Measuring
Objects
Measuring Distance
and Length of an
Object
Measuring the Area
of a Closed Object
TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App
The toolbar menu contains the tools associated
Measurement
with measurement features in geometry. These features allow
you to perform different measurements and calculations on
your constructions.
For all measurements described in this section:
¦
You can add a descriptive comment to a measurement by
entering text immediately after creating the measurement, or by
using the tool in the
Comment
¦
You can change the location of a measurement result by dragging
it to a different location.
The tool measures length, arc length, perimeter,
Distance & Length
circumference, radius, or the distance between two points.
1. Create a segment as shown in this
example.
2. Press
2ˆ
TI-89:
TI-92 Plus / Voyage™ 200 PLT:
and select
1:Distance & Length
3. To measure:
¦
Length, perimeter, or
circumference – Select a segment,
arc, polygon, or circle.
¦
Distance – Select two points.
¦
Radius – Select the center point
then select the circumference of
the circle.
The tool measures the area of a selected polygon or circle.
Area
1. Create a polygon or circle.
2. Press
2ˆ
TI-89:
TI-92 Plus / Voyage 200 PLT:
and select .
2:Area
3. Select the polygon or circle whose
area you want to measure then press
¸.
toolbar menu.
Display
ˆ
.
Select an object.
The result is displayed.
ˆ
Select an object.
The result is displayed.
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