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折叠问题一例
Author:
孟宝兴
GeoGebra
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兩組對邊相等和有直角的四邊形
畫出對稱圖形
四邉形 (四年級) 教師版
拼砌四邊形
找出對稱軸
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賺賠:例2
封閉區域著色2
gyzqx 共頂點的圓錐曲線
八邊形碎形
內外角平分線的副本
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Definite Integral
Polygons
Statistics
Trigonometric Functions
Diagrams