• @yannic@lemmy.ca
    link
    fedilink
    13
    edit-2
    2 months ago

    I get you, but it doesn’t clearly indicate the angle in the middle at the base as much as it suggestively waggles its eyebrows towards 90⁰, it could just as easily be 89.9999999999999⁰, although upon zooming in, you can see the line does shift one pixel over on its way up. You simply can’t trust any of the angles as 90⁰ unless it’s got the ∟ symbol (that’s the official unicode) or you’ve measured them yourself, and with that one pixel off-set, it’s decidedly not 90⁰. That’s why you have to do the math.

    • @Denjin
      link
      8
      edit-2
      2 months ago

      The internal angles of a triangle always add up to 180⁰, therefore the one pixel offset is irrelevant because the unlabelled angle is, despite what the image suggests, 60 80⁰.

      • Assuming you’re talking about the triangle on the left, it’s 80⁰: 180 - 60 - 40 = 80. The other two unlabeled angles are 100⁰ and 45⁰ respectively. None of the unlabelled angles are 60⁰.

        • @jj4211@lemmy.world
          link
          fedilink
          22 months ago

          The shape on the left might be a quadrilateral instead of a triangle, with a vertex at the same place as the top vertex of the shape on the right.

        • @Denjin
          link
          12 months ago

          Yes I meant 80 lol, thanks