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S409 圆形转动
Author:
学用数学
,
acchu
GeoGebra
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斜率的值
平行線的斜率
祖冲之的期望:内棋与外棋
兩位數除以一位數(二)
直線的斜率
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探索三角形外角定理
彩色包絡球
時鐘
表面积变化
资料共享每日一题
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Translation
Tangent Function
Quadrilaterals
Cosine
Logarithmic Functions