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错觉图形-外凸的四边形
Author:
马宁
GeoGebra
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第八周作业1
盈利與虧蝕
中华人民共和国国旗
活动三：应用性质
龙形曲线-分形龙2
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畢氏定理動態證明(歐基里得，應用時間參數跳躍函數)
箏形
ttyy
单位圆画三角函数图像的副本
Twghmkc_P5分數乘法
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Multiplication
Similar Triangles
Curve Sketching
Means
Inequalities