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Key to Geometry

Key to Geometry

Key to Geometry offers a non-intimidating way to prepare students for formal geometry as they do step-by-step constructions.
  • Students begin by drawing lines, bisecting angles, and reproducing segments using only a pencil, compass, and straightedge.
  • Later they do sophisticated constructions involving more than a dozen steps and are prompted to form their own generalizations.
  • When they finish, students have been introduced to 134 geometric terms and are ready to tackle formal proofs.

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