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橢圓1-同心圓法

Author:15黃瀚霆

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兩組對邊相等和有直角的四邊形
畫出對稱圖形
sanjiaohanshu
找出對稱軸
四邉形 (四年級) 教師版

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以剪貼比較圖形大小
下和與上和
學習活動二之二參數與圖形結構的關係
橢圓3-平行四邊形法
正方形

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Differential Equation
Vectors
Statistics
Trigonometric Functions
Cube

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