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Penrose 阶梯
Author:
yiyi
GeoGebra
New Resources
活动三：应用性质
第八周作业2
正方形雪花图案
撒针估算面积实验
盈利與虧蝕
Discover Resources
圓圈圈
Magnitude of cosine
三角函数诱导公式的副本
Uses of Trigonometry
[洋葱] 与相似有关的定值问题-Q2
Discover Topics
Distributions
Optimization Problems
Integers
Dilation
Isosceles Triangles