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Author:
Ku, Yin Bon (Albert)
GeoGebra
New Resources
兩位數除以一位數（一）
判斷球體
三位數除以一位數（一）
找出對稱軸
畫出對稱圖形
Discover Resources
挑战中考压轴题
example 3
mooc第四讲椭圆反射
同餘
黄金三角形到螺旋线（表格法）
Discover Topics
Pyramid
Pie Chart or Circle Chart
Diagrams
Numbers
Trigonometry