Loci Of Midpoints Of Pedal Triangles
by: Boonyapa Purt & Philip Todd  pages: 1  6 

Recursive NapoleonLike Constructions Investigated With A Symbolic Geometry System
by: Philip Todd  pages: 7  19 

Mixtilinear Incircles and Excircles
by: Philip Todd  pages: 20  23 

Triangle Circle Limits
by: Walker Ray  pages: 24  39 

An Investigation of the Limits of Geometric Constructions
by: Walker Ray  pages: 40  44 

Using Geometry Expressions to Investigate Curves Drawn with Sticks and String
by: Philip Todd  pages: 45  50 

Special Relativity with Geometry Expressions
by: Brian Beckman  pages: 51  56 

Feynman Says: “Newton implies Kepler, No Calculus Needed!”
by: Brian Beckman  pages: 57  72 

Pedal and Skew Pedal Curves of a Parabola
by: Philip Todd  pages: 73  84 

Feynman?s and Steiner?s Triangle
by: Philip Todd  pages: 85  90 
