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Kaleidoskop
Author:
sofia.borissova
GeoGebra
New Resources
Stairs (Optical Illusion)
Rotating Points (Optical Illusion)
Ellipse as Envelope - Correspondence Method
Slope Field (1)
History of Maths
Discover Resources
Riemann Sum
Lesson 7-2
basic definition of a circle and diameter
Finding the Golden Ratio
射影证明或垂直投影方法