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Angle of elevation and Angle of depression(仰角和俯角)
Author:
chisunch1
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
直角坐標平面上的旋轉變換
【案例】2018年全国1卷理科12题
GeoGebra笔记功能体验课件
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斜線圖的畫法
選擇合適的「中間人」
自我練習
zuiduan
五複合正六面體
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Trigonometry
Straight Lines
Special Points
Conditional Probability
Incircle or Inscribed Circle