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4M1 周界 多邊圖形的周界 20171024
Author:
makkei
GeoGebra
New Resources
第八周作业
【案例】2013年安徽高考15题
三位數除以一位數（二）
球体的体积推导（优化版）
異分母分數減法
Discover Resources
滾出直線之3
橢圓
folding paper by Mr LO WY
垂心(劉虹圻623)
鸚鵡螺旋線
Discover Topics
Rectangle
Incircle or Inscribed Circle
Plane Figures or Shapes
Percentages
Pythagoras or Pythagorean Theorem