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任务6：三角形三边关系
Author:
陈丽婷
GeoGebra
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畫出對稱圖形
拼砌四邊形
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
找出對稱軸
Discover Resources
PMC 2014-15 Q1
代數運算
tesselation
三角形面積(由面積求高)
函数作图工具的副本
Discover Topics
Rhombus
Normal Distribution
Geometry
Numbers
Polygons