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空氣柱共鳴
Author:
陳澤瑩
GeoGebra
New Resources
三位數除以一位數（二）
畫出對稱圖形
四邊形的特性
三位數除以一位數（一）
画直线等分三角形的面积
Discover Resources
angle between planes
Tedt
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
圓-符號核能
翰林數學_2下_CH3-1_三角形的內角與外角
Discover Topics
Tangent Line or Tangent
Symmetry
Planes
Plane Figures or Shapes
Vectors 2D (Two-Dimensional)