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暗棋的步距
Author:
李春培
暗棋的步距
GeoGebra
New Resources
兩位數除以一位數（二）
拼砌四邊形
找出對稱軸
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
Discover Resources
Centroid
太陽系的奧秘
直角坐標的旋轉變換
心脏线切线族
常见四边形是否是双心四边形
Discover Topics
Statistics
Integral Calculus
Functions
Piecewise Functions
Intersection