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三角形兩邊內接相似平行四邊形
Author:
Gideon Huang
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
拼砌四邊形
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
Discover Resources
大樂透開獎機(由小號到大號)
圓錐截痕
圓內弦中點軌跡
圆与它的外切圆
百變火柴
Discover Topics
Derivative
Binomial Distribution
Hypothesis Testing
Rhombus
Interest Calculation