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18以內的加法_李樂雯
Author:
Li Lok Man
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
四邊形的特性
兩組對邊相等的四邊形
找出對稱軸
Discover Resources
waaachen
Animacja (kółka)
最短距離
數線
圆锥曲线的产生
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Plane Figures or Shapes
Piecewise Functions
Geometry
Angles
Linear Programming or Linear Optimization