• Maggoty@lemmy.world
    116·
    9 hours ago

    Stupid stuff like this is why kids hate math class. Unless the problem says calculate all unmarked angles, those visually 90 degree angles are 90 degrees. It works that way in any non engineering job that uses angles because it’s common sense.

    • TheOakTree@lemm.ee
      164·
      8 hours ago

      …what? I get that this drawing is very dysfunctional, but are you going to argue that a triangle within a plane can have a sum of angles of 190°?

      • Maggoty@lemmy.world
        153·
        8 hours ago

        Nope I’m not saying that. I’m saying this is a gotcha question that demotivates learners.

        • TheOakTree@lemm.ee
          8·
          8 hours ago

          I see. I agree completely. The only place this belongs is as a thought experiment on making assumptions in geometry.

        • TheOakTree@lemm.ee
          51·
          8 hours ago

          Yes, I believe I implied this by suggesting that the sum of angles being 190° is absurd.

      • starman2112
        21·
        8 hours ago

        No, they’re saying that unless you’re already good at this stuff, it’s easy to assume that a visually 90° angle is actually 90° even when it’s not