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Keith Hatfield

  • Surface of Revolution

    Activity

    Keith Hatfield

  • Secant->Tangent

    Activity

    Keith Hatfield

  • Dilations Discovery

    Activity

    Keith Hatfield

  • Angle Bisectors (Incenter)

    Activity

    Keith Hatfield

  • Proving a Triangle is Acute, Right or Obtuse

    Activity

    Keith Hatfield

  • Angle Bisector-Median

    Activity

    Keith Hatfield