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Introduction to Trigonometry from a Unit Circle
Author:
Lam Yat Chun
GeoGebra
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【案例】2013年安徽高考15题
四邊形的特性
錐體建築師
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
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好玩的輪盤
雙曲線規
分數(等值)
Properties of parallelogram(平行四邊形的性質)
贪吃蛇（第一版）
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Similarity Transformation or Similarity
Linear Functions
Integers
Planes
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