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Pentacle
Author:
Jianqiang He
GeoGebra
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兩位數加法
找出對稱軸
兩組對邊相等的四邊形
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
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和差角公式几何证明
P.8.20
(007)80102
固定周界的長方形的面積變化(周界是200厘米)
描点法画一次函数图像
Discover Topics
Hyperbola
Stochastic Process or Random Process
Numbers
Dilation
Trigonometry