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equilateral triangle
作者：
421048
GeoGebra
最新資源
Line Through Two Points and Slope
bewijs stelling van Pythagoras
Folding door
Two Triangle Theorem
Position Vector and Derivative Vector
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Pythagoras
Week 12
prob Julio_b
test
Geo Projecy 2
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二維向量
算術運算
分佈
正切函數
3D 向量（三維）