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练习1
Author:
谢鹏
GeoGebra
New Resources
椭圆内切圆链
球体的截面
第八周作业1
龙形曲线-分形龙2
GeoGebra数学资源(4-8年级)
Discover Resources
圓的基本慨念
下和
testing2
ie 9
图形的放大与缩小.许兴华数学
Discover Topics
Geometric Transformations
Isosceles Triangles
Reflection
Congruence
Inequalities