Casio CLASSWIZ CG Software User's Manual page 174

2. Select T > [Option] > [Expression].
• This displays "EXPR=" at the pointer location and displays
the measurement box.
• The above also displays labels (@n, where n is a serial
number) for each measurement currently on the screen.
3. Now you can use the labels to specify measurement values in the calculation you input in the measurement
box.
• To input a measurement value in the measurement box, input the "@" symbol followed by the numeric label
of the value: @1, @2, etc. Since we want to calculate the sum of the angle (@1) and the supplementary
angle (@2) here, you would input the following: @1+@2.
• You can input "@" by pressing C and then O.
4. After inputting the calculation expression, press O.
• The calculation result is displayed to the right of "EXPR=".
5. Press b twice to hide the measurement box.
6. Try moving the vertex B to somewhere else on the screen.
• This way you can confirm that the calculation results for the
entered expression are constant.
• For information about moving a point, see
object" (page 159).
Note
• When a measurement is a coordinate or vector component, the label format becomes, "@1X", "@1Y",
etc. "@1X" indicates the x -value of a coordinate or the x -component value of a vector, while "@1Y"
indicates the y -value of a coordinate or the y -component value of a vector.
To draw △ABC and then draw △A'B'C' by doubling the length of each side of △ABC. Next, divide
Example 2:
the area of △A'B'C' by the area of △ABC.
In this example, the Area Calc command is used, which allows input of the area of a filled figure into a formula.
1. Draw and select △ABC and then use T > [Transformations] >
[Dilation] to draw the double scale △A'B'C'.
• For details about using the Dilation operation, see
Transformation Operations" (page
2. Specify yellow as the fill color for △ABC and cyan as the fill color for
△A'B'C'.
• For information about changing the fill color of figures, see
"To specify fill color and intensity of a closed figure (polygon,
circle, etc.)" (page 161)
"To move an
"Other
167).
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