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兩條直線垂直應用
Author:
2021mbcs1gd
GeoGebra
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科赫雪花
小学资源收集
异形操场
盈利與虧蝕
斐波那契螺旋弧线(表格法-可动态调节)
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閱讀鐘面及數字鐘(時和分)
高美濕地風車2
三角形面積公式 1/2 bc sinA
[問題] 線在面上
時間
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General Quadrilateral
Natural Numbers
Angles
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