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謝爾賓斯基三角形
Author:
李詠甯
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（一）
兩位數加法
Discover Resources
精神堡壘
加法
DSE Mathematics
密鋪4
椭圆的离心率
Discover Topics
Stochastic Process or Random Process
Matrices
Diagrams
Median Value
Expected Value