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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
兩組對邊相等和有直角的四邊形
柱體建築師
判斷球體
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
Discover Resources
旋梯
奈格爾點
quiz 9.1 1(d)
Sorting Geometric Figures
三角形内角和的折叠法演示
Discover Topics
Kite
Ellipse
Vectors 2D (Two-Dimensional)
Conic Sections
Trigonometric Functions