Ogy: Yes, from the new presentation it is clear that it is a square.
SC: G3 base is fractionally rectangular. Even Lehner states this fact in his book, 'The Complete Pyramids' and he has access to the most recent data from the most recent survey. Unfortunately the results of the most recent survey have never been published. We can. however, observe from the hi-res GPMP drawing of the plateau that G3 is very slightly rectangular in shape, being very slightly longer N-S than it is E-W. TYhe shape of G3, however, is compounded by the fact the its western and northern elevations are not aligned to the cardinal directions whilst its southern and eastern flanks are much more so. The misalignment of its northern and western flanks would seem to be as a result of placing the diagonal of a square onto line L2. This suggests, of course, that L2 (and by extension, L1) were already defined in the manner I describe.
Now, as Morten stated, "...What is wrong with a little reverse engineering...".
Nothing. So, with that in mind, I shall take the high-res GPMP drawing of the Gizamids and demonstrate how it is entirely possible to recreate the three Gizamid bases (to a high degree of accuracy) from the Orion Belt stars.
Figure 1 - The Giza Plateau Mapping Project Map of Giza
Figure 2 - Place the Orion Belt stars over the map with G1 & G3 Fulcrum
Figure 3 - Extend Line (L1) from Al Nitak (G1) centre to centre of Al Nilam (Middle Belt star)
Figure 4 - Double the Length of L1
Figure 5 - Extend Line (L2) from end of L1 to Mintaka centre.
Figure 6 - Double Length of L2
Figure 7 - Square off L2 (This generates a slight rectangle - G3 base.)
Figure 8 - G3 base.
Figure 9 - G3 (red base) with Yellow square overlay.
Figure 10 - G3 (red base) with Yellow square overlay.
Figure 11 - Double G3 base onto eastern flank.
Figure 12 - Double G3 base onto eastern flank.
Figure 13 - Double Line L1 (L3) and extend through diagonal of G3 mirror.
Figure 14 - Double Line L1 (L3) and extend through diagonal of G3 mirror.
Figure 15 - Extend line (L4) from mid of L3 to Al Nilam centre.
Figure 16 - Double L4 length.
Figure 17 - Square L4 diagonal. G2 base.
Figure 18 - Compare G2 base against GPMP map. Excellent agreement.
Figure 19 - Extend line (L5) from end of L3 to midpoint of Al Nilam.
Figure 20 - Double length of L5
Figure 21 - Square L5 diagonal. G1 base
Figure 22 - Remove GPMP drawing. We have three bases.
Figure 23 - The Three bases agree very well with the order, orientation and proportions of the Gizamids.
Now, if I can use the Orion Belt stars to reverse-engineer these proportions that agree very well with the Gizamid proportions (as per the GPMP drawing), then there is absolutely nothing that could or would have prevented the AEs from following such a procedure to forward-engineer such a plan.
EDIT: Clarification (Added 'Al Nitak')
EDIT: Fix spelling.
Post Edited (09-Feb-12 17:00)