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Congruent (SSS)4
Author:
Ricky Chan
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
近似值：有效數字
錐體建築師
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
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自製工具：「星星」
題五
正四面体分形
圓錐曲線的光學性質
質數
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Cone
Triangles
Optimization Problems
Secant Line or Secant
Geometric Distribution