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30度直角三角形

Author:郭勇

New Resources

GeoGebra笔记功能体验课件
錐體建築師
兩位數加法
拼砌四邊形
球體建築師

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數值滑桿
六面體與八面體
正四面體
三角形內角和180度
圖形的周界

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Tangent Line or Tangent
Scalene Triangles
Statistics
Intersection
Trigonometry

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