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內公切線段長求法
Author:
謝易達
GeoGebra
New Resources
兩位數加法
【案例】2018年全国1卷理科12题
錐體建築師
兩組對邊相等的四邊形
判斷球體
Discover Resources
rectangle construction
some pic
四点共圆
angle at the same segment
weihaoxia
Discover Topics
Combinatorics
Straight Lines
Difference and Slope
Kite
Geometry