TI-89 / TI-92 Plus / Voyage™ 200 PLT Cabri Geometry App 10
9.
Repeat step 8 for the other
perpendicular bisector.
10.
Press
…
and select
1:Circle
.
11.
Define the center point of the circle
by moving the cursor near the
intersection of the perpendicular
bisectors until the message “
POINT AT
THIS INTERSECTION
” appears and
press
¸
.
Define the center point.
12.
To complete construction of the
circle, press the cursor pad
B
to
expand the circle.
Press the cursor pad (
B
and
D
) until
the cursor is near one vertex of the
triangle and the message “
THIS
RADIUS POINT
” appears, then press
¸
to complete the circle.
Complete the circle.
13.
Measure the circumference of the
circle by pressing
TI-89:
2ˆ
TI-92 Plus / Voyage™ 200 PLT:
ˆ
and
selecting
1:Distance & Length
.
14.
Position the cursor near the circle
until the message “
CIRCUMFERENCE
OF THIS CIRCLE
” appears and press
¸
.
Measure the circumference.
Learning the Basics
(continued)
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