Polyhedron construction (pyramid)

Nr. 010

I found a homework from a faculty of Mechanical Engeneer of BME homepage. Let's see the problem:
Construct a right pyramid with base hexagonal ABCDEF square. The A and B points are laying on the e=XY line, the base circle is given by O, witch is laying down on the secondprojeting plane of e. The height of the polyhedron is m. Choose the right side of the solutions. Show the visibility. X(30,115, 240); Y(165, 40, 50); O(60, 65, -); m=110

Here the construction step by step:
http://hasznosdoksik.hu/geo/gula_epites_.pdf