Download resources for Geometry, including lesson plans, activities, problems, projects, and calculator & computer programs created by Timothy Peil.
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Undergraduate Textbook
        Survey of Geometry


Straight Lines - Investigate what it means to be a straight line on different types of surfaces (Euclidean plane, sphere, cone, and cylinder).
Link to activities and resources for Math 385. Includes links to resources using Geometer's Sketchpad and NonEuclid software.
2002 World of Change Geometry Workshop

Models of Various Geometries
Animation of a circle in the Missing-Strip Plane.
        Circles in the Missing-Strip Plane using Mathcad 2000. 
        Create your own animations of circles in the Missing-Strip Plane using Mathcad 2000.

Geometer's Sketchpad v.4 (Scripts and Activities)
      Poincaré Half-Plane Restricted Missing-Strip Plane
      Poincaré Half-Plane Triangle around Square 

Geometer's Sketchpad v.3.1 Scripts for the Poincaré Half-Plane

  Angle. Line Ray.
  Angle measure. Midpoint. Segment.
  Circle Perpendicular at point on line. Triangle.
  Distance. Perpendicular bisector.  

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