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GeoGebra
GeoGebra Classroom
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Author:
友高黃
GeoGebra
New Resources
平行線的斜率
双心四边形
探究三角形的全等條件
科氏力 (Coriolis Force)
圓的切線方程
Discover Resources
畢氏定理完成20170330final
Measuring areas by placing different shapes
qr code for symmetry
正方形推垛
橢圓3--平行四邊形法