Are you telling me that "you can see this is a triangle" ??! You can see ?? How dear you say that!

I loved geometry. It made algebra make sense. Plus I had a really awesome geometry teacher. He looked like Shel Silverstein and was super pumped every day to teach math.

I don't believe in geometry

I'm 6'5

Yes but what if one side is so slightly curved that it's invisible to the naked eye? Then your total angles would be 179.99 degrees and it's not a triangle.

that won't work for yoda, though. for him, there is no triangle. there's just doangle or donotangle.

"Just look at it". Visual proofs are not proofs. They're demonstrations. For a species that is so easily fooled by things we see, visualization cannot be taken as rigorous proof.

Even philosophy 101 can give you a ton of reasons why looking at it just isn't enough

In one of my last CS classes, we did proofs and would use "by observation" for this kind of thing.

Equilateral triangle. All three sides are equal length and it has three interior angles that add up to exactly 180 degrees.

"If we can't prove these two triangles are similar while not being congruent, the world is doomed."

"Oh my god. We need a 10th grader with at least a B-average, stat!"