Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Cross Ratio of Four Concurrent Lines
Posted:
Jun 28, 2013 6:18 AM


Cross Ratio can be defined in projective geometry either for 4 collinear points or 4 concurrent lines.
Point P connects 4 fixed points in xy plane. Find locus of P so that cross ratio of the four ray pencil is a positive constant.
Regards Narasimham



