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Copy of 周界
Author:
kennylau
,
spkwan
GeoGebra
modified by spkwan, uploaded 16 October 2011
New Resources
三位數除以一位數（一）
算柱 (兩位數)
球体的体积推导（优化版）
柱體建築師
兩組對邊相等和有直角的四邊形
Discover Resources
三條線上的正三角形
Hyperbolic Spiral
立体几何
曲线
尺规作图
Discover Topics
Median Line
Quadrilaterals
Surface
General Quadrilateral
Addition