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三角形的三线
Author:
Xiaoting Yuan
Topic:
Triangles
GeoGebra
New Resources
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
四邊形的特性
判斷球體
Discover Resources
Arcs and Angles at Centre/ Circumference 弧、圓心角與圓周角
優良作品4
圖形的繪製(7)---端點在軸上的固定長線段
slide base
周界2
Discover Topics
Fractal Geometry
Means
Equilateral Triangles
Constructions
Straight Lines