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正弦定理验证
Author:
junfeilx
GeoGebra
New Resources
錐體建築師
四邉形 (四年級) 教師版
拼砌四邊形
画直线等分三角形的面积
柱體建築師
Discover Resources
分數除法4: 1 ÷ a/b (包含)
三個外切圓
目標函數
Dart Board
賺賠：例3的副本
Discover Topics
Surface
Coordinates
Probability
Integers
Set Theory