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複合圖形體積(三角形與四邊形結合)
Author:
澎湖縣中正國小
GeoGebra
New Resources
找出對稱軸
四邉形 (四年級) 教師版
四邊形的特性
畫出對稱圖形
兩組對邊相等的四邊形
Discover Resources
集合運算
Similar triangles inscribed iteration
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
Angle Between Two Planes Definition 平面與平面間之交角 定義
外心
Discover Topics
Ratios
Tree Diagrams
Statistics
Centroid or Barycenter
Inequalities