College Geometry: Using The Geometer’s Sketchpad (Key Curriculum Press)
College Geometry: Using The Geometer’s Sketchpad (Key Curriculum Press) by Barbara E. Reynolds; William E. Fenton Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less
College Geometry: Using The Geometer’s Sketchpad (Key Curriculum Press), Reynold
A nice touch in this textbook is the timeline of major discoveries in the field.