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On Wabe's shot the two lower lines forming the quadrilateral intersect exactly in the bottom middle of the frame;
Vision By 2020, long-felt desires of the common man to be fulfilled i.e, reserved accommodation on trains available on demand, time tabled freight trains, high end technology to improve safety record, elimination of all unmanned level crossings, improved punctuality, higher average speed of freight trains, semi high speed trains running along the golden quadrilateral, zero direct discharge of human waste.
Noticing that A, B, C, D are coplanar and furthermore form a cyclic quadrilateral, it remains to find the circumradius of this shape as this will yield an altitude to our equilateral triangles.
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and a basis of formal union with the Free Baptists and ‘Christian’ churches, and in its ‘Quadrilateral’ formulates also a plan for the federation at least of the various Protestant churches of the United States.