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平行四邊形的高
Author:
鍾文欽
Topic:
Parallelogram
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
判斷球體
錐體建築師
四邊形的特性
兩位數除以一位數（一）
Discover Resources
河內塔 (Tower of Hanoi)
Simultaneous Linear Equations 聯立二元一次方程
ghseh 二次函數描點法頂點法-2
Locus (Two points 2)
Copia de 模版 - 無框黑板
Discover Topics
Rhombus
Fractions
Algebra
Reflection
Division