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square & Triangle
Author:
Alex Leong
GeoGebra
New Resources
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
四邉形 (四年級) 教師版
錐體建築師
球體建築師
Discover Resources
證平行四邊形 (對角相等)
angle sum of triangle
擴分和約分
面積2
三方圓三視圖
Discover Topics
Secant Line or Secant
Triangles
Ellipse
Linear Regression
Quadrilaterals