Casio Geometry - Manual (Page 46)

20060601 20070101
5-5
Using the Measurement Box
4. To make the drawing screen active, press
J.
• This causes the measurement box to become unhighlighted and the pointer to reappear
on the drawing screen.
5. Press
o to deselect the current points and then select points A, D, and C.
• This causes the area of the triangle ADC to appear in the measurement box. The above
procedure shows that the areas of the two triangles are the same.
6. To close the measurement box, press
J.
Note
A value that shows the area of an object whose lines intersect is indicated by double
asterisks (
``) to the left of the value. This indicates that the value may not indicate the
correct area.