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正余弦型函数
Author:
洋葱教研
Topic:
Trigonometric Functions
GeoGebra
New Resources
GeoGebra笔记功能体验课件
找出對稱軸
兩組對邊相等的四邊形
兩位數除以一位數（一）
球體建築師
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最小周長
reflectional symmetry_1
椭圆的定义
时钟（序列文本）
翰林數學_2下_CH3-1_三角形的外角和
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Differential Calculus
Complex Numbers
Centroid or Barycenter
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