- similarity
- sierpinski triangles
- όμοιες ελλείψεις
- linear transformations-2
- regular polygons-1
- areas of similar triangles
- pythagorean and galileo's law
- the intersept (thales) theorem
- Koch snowflake
- the three squares problem
- distance between point-line
- similar ellipses
- chord theorem
- secant-secant theorem
- geometric mean theorem
- proof of pythagorean-9
- Solving Similar Triangles (1)
- the height of the pyramid
