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定长线段在相交直线上滑动
Author:
冯伟冀
GeoGebra
New Resources
找出對稱軸
算柱 (兩位數)
三位數除以一位數（二）
第八周作业
【案例】2013年安徽高考15题
Discover Resources
地球20160328
S5 Locus
立體圖形
Tool3P4P之二
三角柱
Discover Topics
Trigonometry
Dilation
Statistical Characteristics
Area
Geometric Distribution