Orient octagon along the north-south axis. In this position we obtain with a small error, the direction to Great Pyramid and the direction to sacred Mount Kailash, azimuth of which is close to 45 *. Error is -0.58 *.
Now turn octagon on 5 * clockwise. In such position it can be clearly seen that the angle between Baalbek and Lhasa is close to 45 *, and the angle between Lhasa and Uluru is close to 67.5 *, although in this case the error is a bit more than 1 degree.
The exact angle between azimutha of Baalbek and Lhasa is 45.18 *, the error is + 0.18 *. Azimuths between Baalbek and Uluru are 111.79 *, the error is -0.71 *. The angle between the azimuths of Uluru and Lhasa is 66.31 *, the error is -1.19 *.
Turn octagon for another on 2 * clockwise i.e. in total on 7 *. In this position we see that the azimuths of Vatican and of Nan Madol divide half of circumference in the ratio of 67.5 * / 112.5 *.
The exact angle between the directions is 67.83 *, the error is + 0.33 *..
Rotating pentagram we determined that the angle between the directions to Teotihuacan and White pyramid in China is close to 45 *. Now, thanks to octagon which is turned on 8.5 * clockwise, we can be convinced again in this.
The exact angle between azimuths is - 44.63 *, the error is -0.37 *.