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王二星际全能元素人2019
Author:
王连福
GeoGebra
New Resources
盈利與虧蝕
折扣
平行線的判定
中华人民共和国国旗
异形操场
Discover Resources
Dividing in a Ratio 按比分物
兩個圓的中點軌跡
角度
圓心在同一直線上且相切的圓(半徑可改變)
折叠问题一例
Discover Topics
Statistical Characteristics
Surface
Prism
Right Triangles
Circumcircle or Circumscribed Circle