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gyzel 橢圓的反射
Author:
均一
GeoGebra
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三位數除以一位數（一）
兩位數加法
兩組對邊相等和有直角的四邊形
判斷球體
【案例】2018年全国1卷理科12题
Discover Resources
Task 8
費氏螺旋線
square & Triangle
Gazing Cow Problem (d)
正方体展开图的副本
Discover Topics
Right Triangles
Statistical Characteristics
Integers
Means
Correlation