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路旁的树
Author:
桃篮翁
GeoGebra
New Resources
判斷球體
四邊形的特性
兩組對邊相等的四邊形
算柱 (兩位數)
四邉形 (四年級) 教師版
Discover Resources
Drawing quadrilaterals on the grid or the pinboard
Copy of 固定面積的圖形的周界變化
四次函數
三角形
重难题组周练（1）——二次函数
Discover Topics
Variance
Orthocenter
Correlation
Complex Numbers
Tangent Line or Tangent