However, I believe you are STILL missing the point
Expressing the precise dimensions of the Earth by placing the Pyramids at a precise longitude and latitude, are modern technologies. This is just one such example... I challenge you to do some simple/quick research on the anomalies of the Great Pyramids, then tell us that they "learned all this knowledge" and that it was "lost in time".
Let's take this point then -- that the Pyramids were placed at a precise longitude and latitude. According to a quick Google, the great pyramid is at 29° 58′ 34″ N latitude and 31° 7′ 52″ E longitude. What, precisely, is "precise" about this?
The longitude I would dismiss out of hand, as 0° longitude is a completely arbitrary construct. One might as well say that the pyramid is "precisely" at 0°. Any location around the globe is as good as any other.
As for the latitude, I read some sites pointing out how close it is to 30 degrees. First, there's not really any significance of 30 degrees aside from being a round number, and second, they're not even that close -- they're almost a minute and a half away, which corresponds to about two miles distance. If they were trying to hit 30 degrees precisely, they missed.
Most (perhaps all) of the numerological claims about the pyramids likewise fail under greater scrutiny. When words like "precise" and "exactly" start to get bandied about, and then it's shown that the actual works are not so precise (yet still really, really good) it becomes clear that the pyramids are amazing works, but works of man, and not gods/aliens/Atlanteans/whomever.