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勾股定理
Author:
Wangyu
GeoGebra
New Resources
双心四边形
中华人民共和国国旗
常见四边形是否是双心四边形
第八周作业3
折扣
Discover Resources
動畫
圓周 (圖形H)
伍四红 圆与正方形 面积同周长比较
例题2（P点可拖动）
test
Discover Topics
Dilation
Pythagoras or Pythagorean Theorem
Diagrams
Binomial Distribution
Cuboid