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作者：
Jessika Persson
GeoGebra
最新資源
Squaring a Rectangle (PST Version)
Laundry Basket
Deriving the Arc Length Formula
Linear Combination of Vectors
繪畫垂直線
探索資源
Intersecting chords
Investigating Parallel and Perpendicular Lines
How to construct a parallel through a point
translation over parallel lines
functions2
探索主題
角錐
3D 向量（三維）
特殊點
三角形
正切線或正切