Worksheets for a Talk

Kevin Hopkins, 3 sept. 2015

I have organized many of my worksheets into various workbooks. Most of these you can locate at [url]http://tube.geogebra.org/dochopatsbu[/url]. I have a few worksheets I have created specifically for presentations about GeoGebra. My presentations, typically with working links, are available by following the link in the list of presentations at [url]https://sites.google.com/site/drhopkinsbackground/[/url] .


  • 1. Area of Annulus
  • 2. Similar Triangles
  • 3. Racing
  • 4. Rotating Triangle
  • 5. Average of Averages
  • 6. Pizza Problem
  • 7. Resale Problem

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Area of Annulus

Showing area of annulus between two circles. Like a math contest problem one might see.
– Kevin Hopkins

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