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Proof72 徐晏翎
Author:
郭亮偉
GeoGebra
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異分母分數減法
【案例】圆柱体内放置一个大球六个小球
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
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用心包裝的禮物
優良作品1(沛綺)
堆疊多邊形
固定周界的矩形
旋轉線段
Discover Topics
Similarity Transformation or Similarity
Continuity
Combinatorics
Algebra
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