- Parabola Caustic
- Tangents to Polar Functions
- Ellipse Generalization
- Hyperbola Generalization
- Parabola Generalization
- Archimedes Angle Theorem
- Mass on a cycloid curve
- Protractor
- Discovering Pythagoras
- Largest Outscribed Equilateral Triangle
- DG flower
- Euclid Book 1 Proposition 35
- Euclid Book 1 Proposition 36
- Euclid Book 1 Proposition 37
- Prop11
- Euclid Book 2 Proposition 11
- Euclid Book 6 Proposition 1
- Euclid Book 6 Proposition 8
- Euclid Book 6 Proposition 15
- Euclid Book 6 Proposition 19
- Euclid Book 6 Proposition 31
- Euclid Book 1 Proposition 38
- Ellipse Reflection Property
- Fermat Toricelli
- A Ladder Problem
- Lifeguard Problem
- Drive in Movie Problem
- Least Square Linear Regression
- Fermat Toricelli Geometric Proof
- Ellipse Reflection
- eyeballs
- An Arbelos Theorem