You can perform a number of transformations,
for example a reflection:
We could then rotate the image about A’ and
using the excellent viewing tools, zoom and pan to an excellent
view of the result.
You can make quite complex constructions with
ease using the ‘constraint based’ approached allowed
(in addition to constructions) by the Casio Geometry. For example,
to draw the incircle of a triangle, draw a triangle and a circle
Then constrain the circle to be tangential to
each side of the triangle.
You can also make powerful animations very simply.
Construct the figure of interest; measurements can be shown on
the screen.
Add the animation of choice, in this case point
D on the circumference of the circle.
The Casio Geometry captures every measurement associated with
the construction during each ‘stop’ of the animation.
You can then tabulate the measurements, offering the opportunity
for students to ponder what is happening in the numerous cases
the animation illustrates.
The measurements can be saved to the lists or
to a spreadsheet in the fx-9860G and investigated graphically.
Students have the opportunity to consider if any patterns they
see may be able to be generalized and then attempt to do so.
Further analysis can then be carried out and
further thinking done.
