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以「時」和「分」報時的副本
Author:
周利利
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
Discover Resources
平行的角度
尋找極小值
Problem1:(md+me+mf)/(ad+be+cf)=a
請自訂一個工具
小五_多邊形面積01
Discover Topics
Geometric Transformations
Subtraction
Linear Programming or Linear Optimization
Bar Chart or Bar Graph
Arithmetic Operations