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工具：PlaneArrows, PlaneText... (v.2)
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
畫出對稱圖形
【案例】2018年全国1卷理科12题
直角坐標平面上的旋轉變換
Discover Resources
已知橢圓 x^2/a^2+y^2/b^2=1 (a>b>0)
內切圓滾動
圆的面积展开的副本
S3 Ex4.3 Q01(3D圖)
Choikou 5階
Copia de Fractal Spirograph (Fractal Roulette)
Discover Topics
Scatter Plot
Geometric Transformations
Arithmetic Operations
Diagrams
Fractal Geometry