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Author:
Jimmy Ma
GeoGebra
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
長方體平面投影 (Codex版)
Nested spiral octagon
國旗 (作圖步驟直接餵給 Claude)
sanjiaohanshu
Discover Resources
Net of a cylinder
Ambiguous Cylinder Illusion
數學傳播39卷4期, 平面幾何公式思考
歪斜線與三角形面積
圓周_心算題03
Discover Topics
Geometric Mean
Quadratic Equations
Curve Sketching
Hypergeometric Distribution
Similar Triangles