IM Geo.2.9 Lesson: Side-Side-Side Triangle Congruence

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• Offline Activity (.zip)

• GeoGebra Files

  1. Applet 1 (.ggb)
     
  2. Help her finish the missing steps in her proof: (.ggb)
     
  3. It follows from the Side-Side-Side Triangle Congruence Theorem that, if the lengths of 3 sides of a triangle are known, then the measures of all the angles must also be determined. Suppose a (.ggb)
     
  4. Use a ruler and protractor to make triangles and find the measure of the angle between those sides if the third side has these other measurements. (.ggb)
     
  5. Work on your own to make a diagram and write a rough draft of a proof. (.ggb)
     
  6. Work together to revise your drafts into a clear proof that everyone in your class could follow and agree with. (.ggb)