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S0E09 内凹外凸的四边形
Author:
宋晓燕
GeoGebra
New Resources
柱體建築師
判斷球體
兩組對邊相等和有直角的四邊形
球體建築師
算柱 (兩位數)
Discover Resources
傅立葉級數
觀察圖中有哪些角會相等
Drag the red dots, see the area ratio of EHFG to ABCD
軌跡 直線 (與兩平行線等距)
Copy of 賺賠：例1
Discover Topics
Trigonometry
Square
Poisson Distribution
Mode
Upper and Lower Sum or Riemann Sum