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Desargues's theorem in 3D
Author:
Steve Phelps
Desargues's theorem states two triangle are in perspective axially if and only if they are in perspective centrally. A proof is easy to see in 3D.
GeoGebra
New Resources
WC 2018
Ellipse and Equation
အခြေခံ data အခေါ်အဝေါ်များ
רישום חופשי
Derivative and Differential - A Geometric Point of View
Discover Resources
Tessellation 1
squareeee
SECTION
Segments
Euler Line (Corey)
Discover Topics
Piecewise Functions
Pythagoras or Pythagorean Theorem
Optimization Problems
Triangles
Natural Numbers