#Euclid Book VI Proposition 2 states: If a straight line be drawn parallel to one of the sides of a triagle, it will cut the sides of the triangle proportionally; and, if the sides of the triangle be cut proportionally, the line joining the points of section will be parallel to the remaining side of the triangle.
#Desargues' two triangle theorem represented as a graph.
#The red and blue nodes represent points and lines.
#A connection between nodes represents incidence.
#The two node at the end are the colinear/concurrent
#points/lines of the six coners/sides of the two triangles.
#Note that this graph possess perfect symmetry.
#The graph can be repositioned so any node can occupy
#one of the "ends".

#   Xah
#   xah@xahlee.org
# ∑ http://xahlee.org/

#Converted from Mathematica
#by SaveToRotaterFormat.m

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