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normal dist.
Author:
Chen, shih-hsiung
GeoGebra
New Resources
異分母分數減法
找出對稱軸
三位數除以一位數（二）
拼砌四邊形
兩位數加法
Discover Resources
餘弦定理
Parallelogram 02
glt-h02-06 平行四邊形柱展開
string art
正方形的邊長和周界
Discover Topics
Coordinates
Combinatorics
Vectors 2D (Two-Dimensional)
General Quadrilateral
Pyramid