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Proof1 楊玉峰
Author:
郭亮偉
GeoGebra
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算柱 (兩位數)
拼砌四邊形
兩組對邊相等和有直角的四邊形
判斷球體
Nested spiral octagon
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餘弦定理
兩位小數
正十二面體內接正四面體旋轉
Copy of 以剪貼比較圖形大小 題1
拋物線3-平行四邊形法
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Equations
Random Variables
Perimeter
Frequency Distribution
Ellipse