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定理介紹：切線與半徑 | Tangent and Radius
Author:
Ricky LI
,
chisunch1
GeoGebra
New Resources
三位數除以一位數（二）
拼砌四邊形
柱體建築師
異分母分數減法
兩位數除以一位數（一）
Discover Resources
a>1, y=Log(a,x) and y=a^x 有可能0,1,2交點!?
三角形的邊長關係
腳踏車
ggxfs 凹面鏡的反射成像
（三）观察物体
Discover Topics
Inequalities
Real Numbers
Parallelogram
Translation
Confidence Interval