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小數乘法
Author:
amy123
這是小數的練習題，是為了幫助小朋友記得小數該怎麼算。
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判斷球體
近似值：有效數字
找出對稱軸
算柱 (兩位數)
小数 的副本
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圓內接四邊形 ABCD ...，求 sinθ=?
折射率的定義
Concept of Ratios 比的概念
Locus: Equidistance From Two Points
ppppp
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Sphere
Trigonometry
Geometric Distribution
Intersection
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