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ghk105b19 切線長度
Author:
均一
GeoGebra
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兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
sanjiaohanshu
異分母分數減法
三位數除以一位數（二）
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對稱圖形
等軸雙曲線
Ch 12 Angles related to straight lines
Angle Between a Line and a Plane Definition 線與平面的交角 定義
圖形
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Probability
Intersection
Plane Figures or Shapes
Arithmetic
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