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20190530 與平行線有關的角
Author:
Hui Sir
GeoGebra
New Resources
龙形曲线-分形龙2
第八周作业3
科赫雪花
常见四边形是否是双心四边形
椭圆内切圆链
Discover Resources
MHschool
Cycloid
等腰三角形
四邊形的特性
同心圓
Discover Topics
Addition
Statistics
Parallelogram
Perimeter
Vectors