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Positive angles & Negative angles
Author:
Ricky LI
Topic:
Angles
Drag the point C and observe the change of the size of the angle.
GeoGebra
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【案例】2018年全国1卷理科12题
空间中两直线的位置关系
兩位數除以一位數(一)
三位數除以一位數(一)
兩位數除以一位數(二)
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过定点且与直线相切的圆
Proof1 楊玉峰
矩形的極式
HCF 和 LCM 的應用
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