You have yet to prove you have done any experiments, either. Quoting some asinine book doesn't prove anything.
I've done my own experiments. Click here for the details.
There is nothing wrong with the experiments put fourth in Earth Not a Globe. They are perfectly coherent. If you require further experimental evidence please read "One hundred proofs the Earth is not a Globe" by William Carpenter, or "Zetetic Cosmogony" by Thomas Winship
Reading your first experiment, I nearly fell over laughing. Seriously. Measuring angles proves literally nothing unless you have some bizarre method of doing so without using any maps or globes. So if you walked along the surface of the Earth drawing perfectly stratight lines between Athens, Kiev, London, and Madrid, and went back over each line measuring that it was perfectly straight, and THEN measured the angles, you might have a case. Did you do that? I didn't think so.
But using a flat map to prove a flat earth is ridiculous. Because you aren't measuring the angles between them on the Earth, but on a flat map. Try finding the angles using a globe. I bet you one million dollars that you'll find conclusive evidence proving that the globe you're using isn't flat. Does that prove anything about the shape of the Earth? Of course not. And neither does proving that a map is flat.
And if I'm mislead, if you actually did find these angles withuout using a map, and you are 100% positive of their accuracy, I would only ask that you describe your methods in such detail that I could replicate the results. If you DID use a map, then your point is null.