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銳角三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
兩組對邊相等的四邊形
美國國旗 (Codex 版)
sanjiaohanshu
第八周作业
美國國旗 (Claude 版)
Discover Resources
二項分佈
正方形內部
circle
相似双子模型（任意三角形）
正方体展开图的副本
Discover Topics
Fractions
Stochastic Process or Random Process
Angles
Square
Correlation