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圓錐截痕
Author:
洪宜慧
GeoGebra
New Resources
找出對稱軸
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
第八周作业
兩位數除以一位數（二）
Discover Resources
橢圓軌跡
GeoGebraBook(for20151202)
透視
名師補習中介 Top Tutor
分數與小數的副本
Discover Topics
Linear Functions
Terms
Vectors 3D (Three-Dimensional)
Combinatorics
Conic Sections