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四下:多边形密铺验证
Author:
钟秀群
,
孟宝兴
GeoGebra
New Resources
Piano. Keyboard.
Witch of Agnesi - A Classical Construction
Viviani's Window
Parallel or Not? (V2)
Rotating Points (Optical Illusion)
Discover Resources
test178
KÜBRA
inscribed quadrilateral
A Special Triangle & Its Properties (I)
Properties of Parallelograms
Discover Topics
Scatter Plot
Cube
Centroid or Barycenter
Similar Triangles
General Quadrilateral