Calculator User Manual
CASIO
α-10
• Geometry mode errors
When you see 
this message:
It means this: So you need to do this:
First select a 
segment. 
You are attempting to construct a 
perpendicular bisector without first 
selecting a line segment.
Select the required object(s) and 
then try again.
First select a 
line and point.
You are attempting to construct a 
perpendicular or parallel without first 
selecting a line segment and point.
First select 
2 points or a 
segment. 
You are trying to construct a midpoint 
without first selecting two points or a 
line segment.
First select 
the applicable 
figure. 
• You are trying to construct a point of 
intersection without first selecting two 
lines.
• You are trying to execute an Add 
Animation or Replace Animation 
command without first selecting the 
required object.
• You are trying to execute an Add 
Table command without first selecting 
the required object.
First select 2 
segments.
You are trying to construct an angle 
bisector without first selecting two line 
segments. 
Too Many 
Objects! 
Work memory 
cleared.
Work memory became full. Delete objects you no longer need or 
open a new file.
Invalid 
Measurement
You are attempting to use the 
Expression command to input 
an expression that contains a 
measurement that does not exist.
Check to make sure that the 
expression you are inputting contains 
only measurements that are currently 
on the screen.
Too Many 
Animations
You are trying to add more than 10 
animations.
Use the Edit Animations screen to 
delete animations you no longer 
need, or create a new file and add 
new animations.
First select 
point(s).
You are trying to execute the Trace 
command without first specifying a 
trace point.
Specify the trace point and try again.
Too Many 
Trace Points
You are trying to specify more than 10 
trace points.
Select only up to 10 trace points.
Too Many 
Rows
You are trying to add more than 26 
columns to an animation table.
Delete columns from the animation 
table that you do not need and try 
again.










