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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
New Resources
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
拼砌四邊形
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
Discover Resources
glt-c02-12 八角柱旋轉
Q123
Question 3
乘法加工
方块堆叠(cube))
Discover Topics
Equilateral Triangles
Linear Functions
Derivative
Subtraction
Straight Lines