悠然 from China: Acute Angle Quinquesection Method
悠然 from China: 3-13 Division Methods by Fu Wei
悠然 from China: Double 30-60-90 Triangles
悠然 from China: Four Quinquesection Methods
悠然 from China: Folding Triskaidecagon in Square
悠然 from China: Idea for Folding Triskaidecagon
悠然 from China: Nearly-equal Square for finding the same interior Triskaidecagon
悠然 from China: 圆心角等分,则真径上圆心直到圆周角形成的角近似等分
悠然 from China: 15 等分取法
悠然 from China: Fold Max Regular Nonagon in Square
悠然 from China: Fold Regular Nonagon in Square
悠然 from China: Polygons in Square
悠然 from China: fold max hendecagon P1
悠然 from China: fold max hendecagon P2
悠然 from China: fold max hendecagon P3
悠然 from China: fold max hendecagon P4
悠然 from China: 2-3-4-5 & √29_ Interesting Pythagoras Tree
悠然 from China: numbers and their square root values
悠然 from China: 29 Division Method
悠然 from China: 57等分_57 Division Method
悠然 from China: Sequence Square Prove
悠然 from China: 9+3√3 取点方法
悠然 from China: 三等分综合--Trisection Summary
悠然 from China: Find Max Hexagon in Square
悠然 from China: Fold Optimal Hexagon from Square by David Dureisseix
悠然 from China: 正方形取最大六边形_Fold Max Hexagon in Square
悠然 from China: find 30 degrees by folding
悠然 from China: Find 30 degrees by Drawing Circles
悠然 from China: Find 30 Degrees Diagram
悠然 from China: max heptagon in square