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三角形平移重叠问题
Author:
黄理超
GeoGebra
New Resources
球體建築師
拼砌四邊形
三位數除以一位數（一）
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
Discover Resources
椭圆与圆的关系
DSE Circle-ACT01A Relationship between Chords and Centre of a Circle
三角形外心
立體圖形
我的第一个绘本
Discover Topics
Rational Numbers
Intersection
Solids or 3D Shapes
Straight Lines
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