That dude used math not a drawing showing the rays of the sun to prove the earth is not flat. Maybe you idiots should use science too if you wanted to ever prove something but that wouldn't be possible because math would not confirm your idiotic views, just like you don't want to admit that boats and planes go around the globe and end up in the same place. You need to keep your delusion by ignoring facts. Still a liar I see.
If he only believes drawings, here is one from long before he was born.
This picture is taken from the 16th century astronomy textbook, On the Sphere of the World.
That's just a conspiracy propagated by the biggest conspirator of all times, Pythogoras himself.