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劉虹圻 垂心
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
New Resources
判斷球體
球體建築師
兩位數除以一位數（一）
拼砌四邊形
【案例】2018年全国1卷理科12题
Discover Resources
games
三圓相切
三角形
gdss
差的积分
Discover Topics
Rhombus
Function Graph
Expected Value
Probability
Logic