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三视图与几何体

Author:杨晓晨

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直線的斜率：水平變化 & 鉛垂變化
三角函数的副本
撒针估算面积实验
常见四边形是否是双心四边形
第八周作业2

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等差數列的和
圓錐曲線篇
規律物件集的製作
旁心
四年級除法

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Reflection
Optimization Problems
Calculus
Sphere
Congruence

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