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平行四邊形有甚麼特性？
Author:
Anthony OR 柯志明
Topic:
Parallelogram
English version:
http://ggbtu.be/m79826
GeoGebra
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【案例】2018年全国1卷理科12题
畫出對稱圖形
錐體建築師
兩組對邊相等的四邊形
判斷球體
Discover Resources
彩虹三角
自行车运动
正三角形
火箭
內心
Discover Topics
Inequalities
Diagrams
Planes
Poisson Distribution
Pythagoras or Pythagorean Theorem