Flat Earth Math | Are all vertical lines parallel? (Bev "Try Thinking") @FlatEarthMath | Uploaded January 2023 | Updated October 2024, 6 hours ago.
About two weeks ago, I caught part of a live stream in which Bev demonstrated that vertical lines are always parallel, and he used a geometric proof by Sarugaki, in his Try Thinking discord server. I made a quick response, which I called my rebuttal to Bev, and published it that night.

Here's my follow up.

Bev's original livestream (cued up to the Sarugaki proof):
youtu.be/PBU4LXxWgME?t=4499

My "rebuttal" video:
youtube.com/watch?v=DTE4_eDb0PQ (4 minutes)