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Examining Angles in  Polygons
(already made -- ready to use file)

(Materials for use with Geometer's Sketchpad 4.0 or higher -- not GSP 3.0)

Help students to discover or reinforce the angle formulas associated with polygons. 
The pages are shown below.

This program was designed to be shown on a 800 x 600 computer screen.
This is one file with 5 pages.

These .gsp and .pdf files are to be used only by individual teachers in their own classrooms.
Please refer to Terms of Use.

Download
PolygonAngles.gsp

(only for GSP 4.0 or higher)

Download Accompanying Worksheet
(.pdf format)

If you do not have access to GSP software, you can access similar polygon files about interior angles, exterior angles, and regular figures that we have posted at the
Regents Prep Web Site as Internet active Java Sketchpad files. 


General (and simple) Directions:  
  • Be sure that the students have chosen the arrow in the upper left hand corner of the screen.
  • Be sure that the screen is maximized so that the tabs at the bottom of the screen are visible.  (The middle box at the right is showing a screen in maximized view.)
  • Read and follow the directions that appear on the page. 
    "SHOW" means the values will appear when you click on the button.  "HIDE" means the values will disappear when you click on the button.
  • To end the exploration, choose FILE - CLOSE.  When the box asking if you wish to "Save Changes" appears, choose NO.  This will keep the file in the same state as when you started working.  None of the students' changes (or messing) will be saved.
            

              PolygonAngles.gsp

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