Key to Geometry, Book 7: Perpendiculars and Parallels, Chords and Tangents, Circles

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  • $ 9.99
  • Regular price $ 17.99


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 7 includes three comprehensive chapters which cover perpendiculars and parallels, chords and tangents and circles. Student workbook, consumable student will also need a compass, a straight edge and a sharp pencil.

  • PB
  • 8.5 x 11 in.
  • 154 pp.
  • Excellent-NEW