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平行四邊形的高
Author:
whtong
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
判斷球體
異分母分數減法
兩位數加法
Discover Resources
mmvbcvbcv
生活中的平面圖形─點與線的性質
鑲嵌圖形-2 ROZE
dandan
n 次方根 的複本
Discover Topics
Cone
Constructions
Natural Numbers
Sequences and Series
Mathematics