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折扣 例4
Author:
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
近似值：有效數字
算柱 (兩位數)
異分母分數減法
兩組對邊相等的四邊形
三位數除以一位數（二）
Discover Resources
Ray tracing
multiplication of complex number in unit circle
會動的數據*3
Locus: Fixed Distance From Line Segment
勾股定理的直观证明（义务教育数学 新课标-例82）
Discover Topics
Correlation
General Quadrilateral
Pythagoras or Pythagorean Theorem
Inequalities
Normal Distribution