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winter vacation homework 12
Author:
sungsun0808
GeoGebra
New Resources
兩位數除以一位數(一)
【案例】2013年安徽高考15题
異分母分數減法
三位數除以一位數(二)
拼砌四邊形
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編織圓
椭圆两个焦点与椭圆上点的连线
拋物線2-焦點法
鸚鵡螺旋線
勾股定理
S5R1L4圆内迭代反射——朱老师
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Arithmetic
Parametric Curves
Orthocenter
Centroid or Barycenter
Polygons