Key to Geometry: Perpendiculars: book 4

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by Newton Hawley and  Patrick Suppes

Key to Geometry offers a non-intimidating way to prepare students for formal geometry as they do step-by-step constructions. Using only a pencil, compass, and straightedge, students begin by drawing lines, bisecting angles, and reproducing segments. Later they do sophisticated constructions involving over 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. Book 4 covers Perpendiculars.

  • PB
  • 0.2 x 8.2 x 10.5 inches
  • Excellent-NEW