• MuchPineapples@lemmy.world
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    4 months ago

    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.

  • Brickardo@feddit.nl
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    4 months ago

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

  • PunnyName@lemmy.world
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    4 months ago

    I nearly failed geometry because I didn’t understand what my instructor wanted from me.

  • sundray@lemmus.org
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    4 months ago

    “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!”

  • Semi-Hemi-Lemmygod@lemmy.world
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    4 months ago

    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.

    • Cethin@lemmy.zip
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      4 months ago

      I loved geometry. It’s the class where I first got experience programming. I just sat in class programming stuff on my calculator not really paying attention. I did fine in the class luckily.

      Totally unrelated, but I (30 yo) recently realized I’m almost certainly ADHD. There definitely weren’t any identifiable signs before that people should have noticed…

  • NutWrench@lemmy.world
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    4 months ago

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

  • Sotuanduso@lemm.ee
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    4 months ago

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