GEOMETER'S SKETCHPAD SKETCH FOUR  in VERSION 3

NOTE - - THis activity in VERSION 4 is below.

For best results, follow this script line by line.  Several shortcuts are
used!  As you work through the scripts, fewer and fewer hints will be
provided.  If you have already been working on a sketch during this
session, shut down and restart the Sketchpad program to insure that your
letter labels will match the labels mentioned in this script.  Before you
print a sketch, be sure that your name and conclusions are on the sketch.

Display, Preferences, Points On
Make segment AB                          
Construct, Point On Object   ( C )
Select segment again
Construct, Point on object  ( D )
Select C 
Transform, Mark Center "C"
Select D
Transform, Rotate, 180, OK (makes D')
Select D, then D' 
Construct, Circle By Center And Point
Select D', then D  
Construct, Circle By Center And Point
If the intersections of the circles are off the screen, shorten AB
Select either A or B and move closer to other one
Select both circles 
Construct, Point at Intersection
Display, Trace Points
Display, Color (pick a color)
EXPERIMENT/PLAY
Move different points
Change the length of AB
Change the distance between C and D
Change the location of C on AB
Make a text box in which to type your name and conclusions

Print

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GEOMETER'S SKETCHPAD SKETCH FOUR in VERSION 4

Before you print a sketch, be sure that your name and conclusions are on 
the sketch.  As you do this activity, be sure to click on blank parts of 
the screen after each move or construction.

Edit
Preferences
Text
(Check) Show Labels Automatically For All New Points
OK
Make segment AB                          
Construct
Point On Segment   ( C )
Switch to Arrow tool
Select segment again
Construct
Point on Segment  ( D )
NOTE - - If C and D are close together, move one of them away from the 
other
Select C 
Transform
Mark Center 
Select D
Transform
Rotate
180
Rotate (makes D')
Select D, then D' 
Construct
Circle By Center + Point
Select D', then D  
Construct
Circle By Center + Point
If the intersections of the circles are off the screen, select either A or 
B and move them closer together
Select both circles 
Construct
Intersection
Display
Trace Points
EXPERIMENT/PLAY
Display, Erase Traces might be something you want to use
Move different points
Change the length of AB
Change the distance between C and D
Change the location of C on AB
Make a text box in which to type your name and conclusions

Print