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Author:
iedc
GeoGebra
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小数 的副本
【案例】2018年全国1卷理科12题
sanjiaohanshu
三位數除以一位數（二）
兩位數除以一位數（一）
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圓圓求切圓
單位圓上的三角函數
複合形體的表面積(凹形)
angles sum on a striaght line
創作對稱圖形 LEVEL 4
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Constructions
Pythagoras or Pythagorean Theorem
Differential Equation
Polynomial Functions
Upper and Lower Sum or Riemann Sum