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1987全国文8
Author:
常振虎
GeoGebra
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四邊形的特性
画直线等分三角形的面积
兩位數加法
拼砌四邊形
兩組對邊相等的四邊形
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外心
我的作法
平面
曲线
Sorting Geometric Figures
Discover Topics
Terms
Angles
Geometric Transformations
Fractions
Pythagoras or Pythagorean Theorem