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Author:
osea
GeoGebra
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第八周作业3
椭圆内切圆链
常见四边形是否是双心四边形
第八周作业
第三周作业效果演示
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橢圓
魏燕貞的GeoGebra課材製作
How tall is that?
二年級數學測驗一
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
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Correlation
Tree Diagrams
Kite
Triangles
Isosceles Triangles