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焦点弦1
Author:
liu
GeoGebra
New Resources
第八周作业
正方形雪花图案
平行線的判定
撒针估算面积实验
第八周作业3
Discover Resources
Operations on Complex Numbers 複數的運算
Introduce Tangent Ratio
運用量度器比較角的大小
导数定义的动态演示.许兴华数学
变化的三角形的内心.许兴华数学
Discover Topics
Integers
Function Graph
Statistical Characteristics
Area
Triangles