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相对坐标系2
Author:
同 吴
GeoGebra
New Resources
近似值：有效數字
長方體平面投影 (Codex版)
兩組對邊相等和有直角的四邊形
小数 的副本
Nested spiral octagon
Discover Resources
自動調整切割數的積分
Quartiles and Box Plot (two data sets) 四分位數與框線圖（比較兩組數據）
利用对称求线段和最值（移动端）
三節棍
f(x)=ax^2
Discover Topics
Logic
Confidence Interval
Straight Lines
Histogram
Indefinite Integral