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不是平行四邊形的四邊形
Author:
dunst kang
GeoGebra
New Resources
三位數除以一位數（二）
第八周作业
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
Discover Resources
Trianglar prism
congruent (SA) 2
梯形的面積
六年級 圓周
S3 Ex4.3 Q01(3D圖)
Choikou 5階
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Exponential Functions
Variance
Fractal Geometry
Vectors 2D (Two-Dimensional)
Symmetry