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sine graph (reduce to 1/2 and then translate leftward by 15 degree)
Author:
Queenie Chan
GeoGebra
New Resources
柱體建築師
三位數除以一位數（一）
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
周界-平移法(教學練習一)
高中選修-數學(甲)2-3積分的意義-黎曼和
正四面體
扇形弧長公式2
正六邊形串珠
Discover Topics
Prism
Means
Algebra
Area
Centroid or Barycenter