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Author:
李政憲
GeoGebra
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兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
判斷球體
【案例】圆柱体内放置一个大球六个小球
球體建築師
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七巧板奔人3
行星運動
菱形
gjc093b19 梯形的面積
線的面化
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Root
Statistical Characteristics
Secant Line or Secant
Quadratic Equations
Rational Numbers