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Introduce tangent ratio
Author:
VCChung
GeoGebra
New Resources
三位數除以一位數（一）
錐體建築師
判斷球體
画直线等分三角形的面积
算柱 (兩位數)
Discover Resources
真分數相乘
籐編直線與曲線
簡單動畫
容積盒子(加蓋)
RLC並聯諧振
Discover Topics
Quadrilaterals
Plane Figures or Shapes
Exponent
Expected Value
Perimeter