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作者：
Fabian Spill
GeoGebra
最新資源
Tangent Vector (2)
bewijs stelling van Pythagoras
רישום חופשי
Steel Chair
Slope Between 2 Points (Phase 2)
探索資源
Refraction at a plane surface
Reflections
exem-aleat
Ed's Hex
Exploring reflection across y-axis
探索主題
對數函數
等式
平移
幾何變換
內切圓