Circular Reasoning

Author:John Golden

Just a fun pattern and mathart sketch. The extra tool - splash[A,B,n] - makes a new set of n concentric circles centered at A, with the first through B. (So B sets the radius.)

New Resources

巧算長方形周界
Perimeter of a Rectangle with Unknown Sides
Cartesian Notation of a Vector
AI for Math Teachers (prompt examples)
Open Education 2026

Discover Resources

Symmetry over the origin
Mr. Krabs
Batch 4 8.6FR
Golden rectangle zoom step by step

Discover Topics

Numbers
Distributions
Scatter Plot
Cube
Complex Numbers