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angle between planes
Author:
johnmayhk
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩組對邊相等的四邊形
第八周作业
柱體建築師
Discover Resources
小二、小三_時間（學生版）
用 Geogebra 模擬日照、影長變換
生活中的平面圖形問題1
迭代多角星
我的第一个绘本
Discover Topics
Combinatorics
Straight Lines
Parametric Curves
Translation
Centroid or Barycenter