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賺賠：例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
賺賠
GeoGebra
New Resources
近似值：有效數字
兩位數除以一位數（二）
三位數除以一位數（二）
兩組對邊相等的四邊形
拼砌四邊形
Discover Resources
Math_Class Activity 1
star
奠基1
duality of regular polyhedron
橢圓P176例11
Discover Topics
Parametric Curves
Geometry
Circumcircle or Circumscribed Circle
Frequency Distribution
Line Segment