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等腰三角形求角度
Author:
普华祥
,
arist
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
拼砌四邊形
異分母分數減法
錐體建築師
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三次函數圖形
圓錐截痕
認識菱形的特徵
验证勾股定理
椭圆规
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Symmetry
Diagrams
Perimeter
Stochastic Process or Random Process
Tree Diagrams