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Pedal-Point construction of the conics
Author:
Jonathan Holland
See Appendix 1 to Chapter 1, Hilbert and Cohn-Vossen "Geometry and the imagination".
GeoGebra
New Resources
Rotating Points (Optical Illusion)
Isosceles Triangle: Quick Construction
Parallel or Not? (V2)
van Aubel's Theorem
Bottema's Theorem
Discover Resources
rotation and translation investigate
test179
Trigonometric Relationships to Unit Circle
Squaring Rectangles
Dandelin's theorem
Discover Topics
Upper and Lower Sum or Riemann Sum
Geometric Distribution
Surface
Logarithm
Subtraction