- Visual Mathematics
- Distances from three points
- Point in an Equilateral Triangle
- Moss Egg by Robert Dixon
- The Pythagorean Theorem.
- Pythagorean Theorem Proof without Words
- Espiral de Baravelle
- Baravelle's Spiral and Infinite Geometric Series
- Rotating Fan
- Circle mandala
- Square Inscribed in an Isosceles Right Triangle
- Pythagorean Theorem proof by translation
- Archimedean Spiral built by parametric equations
- Crossing Wires Problem
- Nested Median Triangles
- Approximation of pi using inscribed polygons
- The Cycloid
- Triangle Area Calculated via Rotation
- Parallelogram Translated to Rectangle
- Trapezoid transformation to rectangle
- Pythagorean Theorem trapezoid proof by President Garfield
- Pyramid Math
- Spiraling Squares - a.k.a. The Four Ants problem
- Circles on Octagonal grid with animated points/segments
- Animated Box with vertices on circles
- Absolute value problem models
- Pulsating Points - Frame of Reference
- Straight Line Motion Illusion - Frame of Reference
- Pythagorean Theorem proof by similar triangles
- Three Intersecting Circles
- Hidden Equilateral Triangle
- Curious Corridors of Numbers
- Polar Vector Clock
- Polygons and Diagonals