- art gallery
- Koch snowflake
- the golden ratio (and aphrodite's phi)
- Fibonacci spiral
- rose curves
- pythagorean spiral
- reflections...
- reflections-2
- archimedes' spiral
- cochleoid
- reflections-4
- reflections-3
- triangles...
- five roses
- square pyramid
- sierpinski triangles
- deltoid
- astroid
- ranunculoid
- the flower of life
- the seed of life
- yin-yang
- Kaleidoscope
- a clock
- approximating pi...
- a function...
- constructing a parabola
- constructing an ellipse
- constructing a hyperbola
- a butterfly curve
- devil's curves
- bifolium
- fish curve
- devil's curves-1
- devil's curves-2
- torpedo curve
- trifolium-1
- Христос Bоскресе!
- pentalpha
- star of david
- a butterfly curve-1
- a clock-3
- devil's curves-3
- Rolling Coin 滾動的硬幣 (1)
- tangram puzzle-1
- wheel of fortune-1
- the reuleaux triangle-1
- newton's disk
- parallels or not?
- lines through a point
- egyptian system of numeration
- regular polygons-3
- string art
