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量角器2
Author:
Sheu Anderson
GeoGebra
New Resources
算柱 (兩位數)
近似值：有效數字
Earth with coastline
錐體建築師
美國國旗 (Claude 版)
Discover Resources
直角三角形斜边上的中线
barara magic stick
歐幾米德多面體（四邊形與六邊形－進階加強版）
任意角的三角函数
Copy of 教學－與直線有關的角
Discover Topics
Cosine
Plane Figures or Shapes
Integers
Addition
Arithmetic Operations