To my students: Below are files containing tools for GeoGebra
constructions in the different models of hyperbolic geometry.
To all others: If you have reached this page with the intent of
downloading a full package of tools for hyperbolic
constructions, those tools have been temporarily removed while I teach a
geometry course this spring. Those files will be accessible once again
this summer. If you need to access these files before then, please contact
me at szydliks@uwosh.edu. I
apologize for any inconvenience.
Students, you can import the tools into your appropriate hyperbolic universe as follows:
* Note: These are instructions for downloading on the Swart Lab Macs in PC mode
using Firefox. The steps might be slightly different on other machines or
with a different browser.
 Download
tools for the Klein disk: Open your file "klein.ggb"
that you created during our last GeoGebra session.
 Before you download the Klein disk tools, check to make sure that your
defining circle really is the unit circle (i.e. the circle centered at (0,0)
with radius 1.) This is extremely important. The tools will not
work if your circle is not the unit circle! To check this, rightclick
on the circle and select "Object Properties." Then check that
under the "Definition" option under the "Basic" tab, it
says "Circle[(0, 0), (1, 0)]." If it doesn't say that, then fix it
so that it does. It is also helpful to check the ``Fix Object" box so
that the circle can no longer be moved. If you don't have your Klein model
available, let me know right away.
 At the bottom of this page, click on the appropriate GeoGebra tool
file (e.g. "kdtools.ggt" for the Klein model tools). Save the file
(don't open it directly!) in a "Downloads"
window/folder or on your desktop.
 From your "klein.ggb file" within GeoGebra, find and open the
file "kdtools.ggt," wherever you saved it. The Klein tools should
then be automatically
loaded into your universe.
 Resave your "klein.ggb" universe with all the new tools
included. Then close this file.
 Download tools for the Poincaré halfplane: Repeat the steps above in an analogous way to download the tools for the Poincaré halfplane.
Open your file "poinhalf.ggb," that you created during our last
session. Select the file "phtools.ggt" from the list below
and download it. From your "poinhalf.ggb file" within GeoGebra, find and open the
file "phtools.ggt." The Poincaré halfplane tools should be automatically
loaded into your universe. Resave your "poinhalf.ggb" universe with all the new tools
included. Then close this file.
*Very Important Note: The Poincaré halfplane tools assume that the
defining line for the halfplane is truly the "xaxis" (i.e. the line
y=0). To check this, rightclick on the line and select "Object
Properties." Then check that under the "Definition" option
under the "Basic" tab, it says "Line [(0, 0), (1, 0)]."
If it doesn't say that, then fix it so that it does. It is also helpful to
check the "Fix Object" box so that the axis can no longer be
moved. If you don't have your Poincaré halfplane model available,
let me know right away.
 Download tools for the Poincaré disk: Repeat the steps above in an analogous way to download the tools for the Poincaré disk.
Open your file "poincare.ggb," that you created during our last
session. Select the file
"pdtools.ggt" from the list below and download it. From your "poincare.ggb file" within
GeoGebra, find and open the
file "pdtools.ggt." The Poincaré halfplane tools should be automatically
loaded into your universe. Resave your "poincare.ggb" universe with all the new tools
included. Then close this file.
File Name 
Description 
kdtools.ggt 
Klein disk tools 
phtools.ggt 
Poincaré halfplane tools 
pdtools.ggt 
Poincaré disk tools 


Download the following tools
only if you had trouble with the line constructions in our previous GeoGebra
activity: 


kdlinetools.ggt 
Klein disk line construction tools 
phlinetools.ggt 
Poincaré halfplane line construction tools. 
pdlinetools.ggt 
Poincaré disk line construction tools. 