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正五邊形摺紙證明
Author:
李政憲
GeoGebra
New Resources
Stairs (Optical Illusion)
cylinder net slider
Piano. Keyboard.
Ellipse as Envelope - Correspondence Method
Construct a Square
Discover Resources
complete the square
Mandelbrotiteration
distance #2
RMHS: Area of 15-gon, Perimeter P=180
Challenge 2c: Reflection in the line y = a
Discover Topics
Logarithm
Linear Equations
Vectors
Geometric Transformations
Circumcircle or Circumscribed Circle