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光的折射（光线自右下向左上）
Author:
樊双平
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
GeoGebra笔记功能体验课件
判斷球體
兩組對邊相等和有直角的四邊形
Discover Resources
Angle between a Line and a Plane 投影與線面角
Transformation of Functions
利用Geogebra說明平行x軸與平行y軸之直線方程式性質
Area of rectangle_Question F
靜態幾何錯視圖
Discover Topics
Geometric Distribution
Vectors 2D (Two-Dimensional)
Cosine
Geometry
Combinatorics