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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
畫出對稱圖形
四邉形 (四年級) 教師版
錐體建築師
Discover Resources
題一
倍數的判別
錐體建築師
folding aeroplane
球面坐標
Discover Topics
Trapezoid
Indefinite Integral
Congruence
Constructions
Logarithmic Functions