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百葉窗2
Author:
李春培
GeoGebra
New Resources
GeoGebra笔记功能体验课件
畫出對稱圖形
拼砌四邊形
四邊形的特性
三位數除以一位數（二）
Discover Resources
翰林B4講p192_類1
ch14 p.30#31
sine graph (reduce to 1/2 and then translate leftward by 15 degree)
畢氏定理拼圖007(8片)
拋物線的幾何性質
Discover Topics
Complex Numbers
Function Graph
Line Segment
Reflection
Congruence