Desargues' Theorem in 2D and 3D

Author:Steve Phelps

If the three straight lines joining the corresponding vertices of two triangles meet in a point (the perspector) then the three intersections of pairs of corresponding sides are lie on a line (the perspectrix).

New Resources

רישום חופשי
Tracing a Surface with Curves
A Square Venn Diagram!
Toroidal Spiral
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

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Right Triangles
Vectors 3D (Three-Dimensional)
Incircle or Inscribed Circle
Kite
Surface