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全等双子模型（等腰三角形）
Author:
冯姣龙
Topic:
Congruence
,
Isosceles Triangles
GeoGebra
New Resources
四邊形的特性
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
球体的体积推导（优化版）
【案例】2013年安徽高考15题
Discover Resources
Building Pyramids 建造角錐體
tube15240
Angle between Line and Plane
夜市麻將模擬機2
長方形的對稱軸
Discover Topics
Tangent Line or Tangent
Sequences and Series
Cube
Complex Numbers
Orthocenter