Browse Apps with Geometry Expressions Source Files
Example: Drawing an Ellipse
Epic Circle Trace 2
Hendecagon Diagonals, Circles and Tangents
Locus of intersection of reflected rays
Abacus Explained Properly
Example: Euclid's Equilateral Triangle 
parabola envelope
Apparent Plane Speeds
Morph a circle into a square
Morph a circle into a line
Example: Graphical Calculus Practice
Basic Derivatives
Vector Combinations and Span
Morphing Clock
Morph curve depends on the parametrization of the circle
Moving point
Example: Altitude of a Triangle
Chord Angle Theorem
Example: A Second Look at Euclid's Equilateral Triangle
Parabolic Reflector
Circles, Tangents and Nonagon Diagonals
Cyclic Quadrilateral Theorem
Polar Rose: Mathematical Flower
Two Circle Trace
Epic Circle Trace
Example: Area of a Triangle
Inverse Function Slope Relation
Example: Clock
Point Trilateration
Binary Clock
Polar Proportional Point and Circle Puzzler 2
Example: Cosine Rule Assessment
Tangent to a Function
Demo
Simple Similar Triangles
Example: Pictures
Polar Proportional Point and Circle Puzzler
Kaleidoscope
Spin the Chrome Icon!
Polar Proportional Point and Circle Puzzler 3
Abacus Explained
Tridecagon Diagonals, Circles and Tangents (BIG)
Circle Equation
Catapulting a Ball 
Example: Draggable Point on a Locus
Demo
The Difference of Two Circles Is A Line
Trapezoidal Sum Rule
Combination of Reflections through Parallel Lines
Kaleidoscope clock
Approximation of a Parabola
Hex Flower
Pythagorean Theorem Calculator
Tridecagon Diagonals, Circles and Tangents
Epic Circle Trace 3
Circle Radius and Proportional Position Puzzler
Binary Test
Circles, Tangents, and Heptagon Diagonals
Basic Unit Circle
Reflection of parallel rays
Combination of Reflections through Oblique Lines
