Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
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
Flip Flop
Blancmange curve (fractal)
Poorly Drawn Parallelograms 2
Average Rate of Change: Graph a Function (1)
Droste effect
Discover Resources
Alternate Exterior Angles
Qualitative Graph Harris
year 6 assessment preparation
Real and virtual images from a Circular Mirror
H2M L15 Q7
Discover Topics
Special Points
Upper and Lower Sum or Riemann Sum
Piecewise Functions
Statistics
Linear Regression