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一线三等角
Author:
叶明杰
GeoGebra
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第三周作业效果演示
科赫雪花
盈利與虧蝕
斐波那契螺旋弧线(表格法-可动态调节)
活动三:应用性质
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正方體的旋轉對稱
謝爾賓斯基三角形
circle segment
[洋葱] 四边形与旋转变换
三角形的內心
Discover Topics
Line Segment
Volume
Optimization Problems
Isosceles Triangles
Similar Triangles