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平行四邊形的面積
Author:
whtong
GeoGebra
New Resources
GeoGebra笔记功能体验课件
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
找出對稱軸
Discover Resources
兩面角
正切函數 y=Tan(x)
直角三角形的內心與相似
五棱柱
任意四边形各边中点的连线必构成平行四边形.许兴华数学
Discover Topics
Geometric Mean
Vectors
Definite Integral
Logarithm
Means