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parallelgram with height 20120319
Author:
iedc
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
三位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
柱體建築師
Discover Resources
鑲嵌圖形-2 SAKULA
周界
地球儀
天佑數學三下B - 分數(二)
频率分布直方图与箱线图
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Tree Diagrams
Linear Equations
Rational Numbers
Trigonometric Functions
Exponential Functions