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正方形折纸减去两角
Author:
孟宝兴
GeoGebra
New Resources
四邉形 (四年級) 教師版
柱體建築師
兩組對邊相等的四邊形
錐體建築師
兩位數除以一位數(二)
Discover Resources
菱形有甚麼特性?
象限
面積2
建國國中第三次段考計算第二題
两次折叠
Discover Topics
Rational Numbers
Trigonometry
Triangles
Scatter Plot
Rhombus