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creeper
Author:
Francese
GeoGebra
New Resources
多邊形的面積
祖冲之的期望：内棋与外棋
垂直線的斜率
龙形曲线-分形龙
圓的基本性質
Discover Resources
Angles in the Circumference and the Centre
相似形_Collection
Question 1(Angle)
頂、棱與面
三角形的构成 的複本
Discover Topics
Sphere
Centroid or Barycenter
Trapezium
Surface
Tangent Line or Tangent