• rockerface 🇺🇦
    link
    fedilink
    arrow-up
    17
    arrow-down
    1
    ·
    2 months ago

    In my geometry classes, it’s only 90 degrees if it’s marked by a right angle marker. Otherwise, no matter how “right” it looks, if you assume before proving, it’s on you.

    • jdeath
      link
      fedilink
      arrow-up
      4
      ·
      2 months ago

      this is a meme tho. i wanted to treat it like a “real life” problem where if i saw those obviously 90 degree corners, i would just say it’s 90 because nowhere else in all my life outside of stupid schoolwork trick questions would that happen. which meant i got to the answer in a few seconds, which is a handy skill in real life.

      • Glemek@lemmy.world
        link
        fedilink
        English
        arrow-up
        2
        ·
        2 months ago

        You could potentially run into this or something very similar in cad when your sketches aren’t fully defined yet. I’ve definitely ran into models that are slightly off square because someone missed a constraint much earlier in the timeline.