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平移旋轉對稱
Author:
chen mingchuan
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（二）
四邊形的特性
兩組對邊相等的四邊形
判斷球體
Discover Resources
正方體交角
Angle Sum of Triangle
題11
計算圖形周界（小六下）
拼出三角形的副本
Discover Topics
Quadratic Functions
Pie Chart or Circle Chart
Mode
Coordinates
Expected Value