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quadrilaterals 2
Author:
iedc
GeoGebra
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錐體建築師
異分母分數減法
球体的体积推导
【案例】2018年全国1卷理科12题
画直线等分三角形的面积
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畫三角形 題3a
利用圓來畫橢圓
笛卡兒心臟線
選修數學
Parallelogram
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Area
Arithmetic Mean
Circumcircle or Circumscribed Circle
Cube
Upper and Lower Sum or Riemann Sum