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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
判斷球體
兩組對邊相等和有直角的四邊形
球體建築師
兩位數除以一位數（一）
Discover Resources
Reference Angle 參考角
Right Triangles in a Circle 圓內的直角三角形
複合圖形(三)
过圆上一点作切线，三步
gltfh 複合圖形-圓柱與圓錐
Discover Topics
Circle
Integers
Linear Programming or Linear Optimization
Limits
Parallelogram