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GeoGebra
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Volume by Disk/Washer around y
z`]]
Volume by Shells Around y
Reflection across a line
Shells
探索資源
PosNegSplit04
triangulos
A ruled surface example
Concurrency In Triangles
Levier
Alternate Angles
探索主題
正切線或正切
餘弦
加法
平移
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