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moon1
Author:
ypy
GeoGebra
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【案例】2013年安徽高考15题
算柱 (兩位數)
判斷球體
兩位數除以一位數(一)
球體建築師
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初中八年级奥数:面积与面积法
正方體及正四面體的對稱性質
cos(α) + cos(β) + cos(γ) 的對稱性
柱體頂棱
任意四边形各边中点的连线必构成平行四边形.许兴华数学
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Percentages
Combinatorics
Complex Numbers
Similar Triangles
Linear Functions