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sine graph (reduce to 1/2 and then translate leftward by 15 degree)
Author:
Queenie Chan
GeoGebra
New Resources
算柱 (兩位數)
錐體建築師
四邊形的特性
柱體建築師
直角坐標平面上的旋轉變換
Discover Resources
△ A B E △ABE 、 △ A C E △ACE 的內切圓半徑分別為 r 2與 r 1,兩者 可以互換嗎
Lesson02 absolute value function
dynamics dragon
包含除法（整數÷整數）的副本
探索勾股三元数
Discover Topics
Normal Distribution
Centroid or Barycenter
Translation
Combinatorics
Calculus