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圖三 的複本
Author:
Michael Ma
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
畫出對稱圖形
第八周作业
兩位數除以一位數（二）
錐體建築師
兩組對邊相等的四邊形
Discover Resources
demo
垂心軌跡
S3 Percentages
加法
单位圆与正弦函数
Discover Topics
Piecewise Functions
Rhombus
Sine
Scalene Triangles
Square