IM 6.1.9 Practice: Formula for the Area of a Triangle

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• Offline Activity (.zip)

• GeoGebra Files

  1. For each triangle, a base and its corresponding height are labeled. Find the area of each triangle. (.ggb)
     
  2. Find the area of the shaded triangle. Show your reasoning. (.ggb)
     
  3. Now, find the exact area of the octagon. Show your reasoning. (.ggb)