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Properties of parallelogram(平行四邊形的性質)
Author:
chisunch1
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數加法
小数 的副本
異分母分數減法
算柱 (兩位數)
Discover Resources
等量公理
周子翔 畢氏定理--2
Math Project
工具：PlaneString
算盘
Discover Topics
Functions
Logarithm
Cone
Set Theory
Probability