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三角形內角和
Author:
李春培
三角形內角和
GeoGebra
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【案例】2018年全国1卷理科12题
第八周作业
画直线等分三角形的面积
三位數除以一位數(二)
【案例】圆柱体内放置一个大球六个小球
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正八面體
n星角
Locus of a vertex of equilateral triangle
S.3 ch7 area and volume 3
测试
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Functions
Numbers
Circle
Statistics
Scalene Triangles