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echen say
Author:
dunst kang
Topic:
Mathematics
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
兩位數加法
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正七邊形2
「ASS」
任意三角形兩不等圓
作业1
雙曲線2--焦點法
Discover Topics
Area
Optimization Problems
Arithmetic Mean
Integers
Algebra