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國二理化_凹面鏡
Author:
林冠曄
GeoGebra
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椭圆内切圆链
百分數及其應用
科赫雪花
折扣
双心四边形
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圓周公式應用題2
tetrahedron_refection
學習活動一解的意義
直方图002
橢圓3--平行四邊形法
Discover Topics
Matrices
Cuboid
Complex Numbers
Optimization Problems
Similar Triangles