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赵爽弦图
Author:
孟宝兴
GeoGebra
New Resources
Rotating Points (Optical Illusion)
Stairs (Optical Illusion)
Linear Cross Section Exercise
van Aubel's Theorem
Angles and Intersecting Lines: Quick Investigation
Discover Resources
Douglas-Rachford for two nonintersecting affine subspaces
Binomial expansion of 1/(1+x)
transformasies
snowflake
congruent triangles (24 November 2020)
Discover Topics
Means
Centroid or Barycenter
Constructions
Parallelogram
Geometric Mean