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少了一個質數One less prime number
Author:
pingfeng.wu
Topic:
Numbers
One less prime number (fix)
GeoGebra
New Resources
四邉形 (四年級) 教師版
錐體建築師
三位數除以一位數（二）
拼砌四邊形
兩組對邊相等和有直角的四邊形
Discover Resources
練習 - 反射對稱
[問題] 點 (4,7) 到 3x+4y = 0 的距離為何？
幂函数演示
reflectional symmetry_6
向量分解的副本
Discover Topics
Cone
Volume
Combinatorics
Inequalities
Vectors 2D (Two-Dimensional)