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證平行四邊形 (對角線互相平分) (對邊 // 且相等)
Author:
誠誠老師
,
W.L. Wong, Albert
GeoGebra
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画直线等分三角形的面积
【案例】2018年全国1卷理科12题
祖冲之的期望：内棋与外棋
科氏力 (Coriolis Force)
【案例】圆柱体内放置一个大球六个小球
Discover Resources
線型函數圖形測驗
線性組合3：正方形
禪繞畫
两角差的正弦公式证明2
函数曲线
Discover Topics
Cuboid
Coordinates
Linear Equations
Planes
Scalene Triangles