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mooc第四讲作业单晨
Author:
单晨
GeoGebra
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正方形雪花图案
中华人民共和国国旗
百分數及其應用
平行線的判定
活动三:应用性质
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題九
平面幾何新路
Copy of 倒數計時
構作對稱圖形
中考数学16讲
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Hyperbola
Terms
Pythagoras or Pythagorean Theorem
Straight Lines
Rotation