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S4E09:转动的圆
Author:
王巍
GeoGebra
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第三周作业效果演示
盈利與虧蝕
异形操场
中华人民共和国国旗
平行線的判定
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k126各國基地
禪繞畫2
碎形六邊形的副本
基础知识
二項分佈的副本
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Quadrilaterals
Cosine
Difference and Slope
Trigonometry
Linear Equations