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霓虹燈
Author:
chen mingchuan
GeoGebra
New Resources
兩位數加法
柱體建築師
兩位數除以一位數（一）
画直线等分三角形的面积
球體建築師
Discover Resources
KidEdu
Furstum
test1
較複雜的周界問題(一)
正切與餘切函數
Discover Topics
Linear Equations
Hyperbola
Conic Sections
Dilation
Frequency Distribution