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Proof1 彭凱揚
Author:
郭亮偉
GeoGebra
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四邊形的特性
算柱 (兩位數)
畫出對稱圖形
sanjiaohanshu
近似值：有效數字
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test
Ex.2
简谐振动函数图像的副本
相似双子模型（任意三角形）
弦中點的軌跡的副本
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Curve Sketching
Means
Sphere
Statistical Characteristics
Perimeter