• Leate_Wonceslace@lemmy.dbzer0.com
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    28 days ago

    There is nothing in the image that suggests that the bottom of both triangles forms a straight line.

    Except for the part where it’s a single straight line segment, as depicted in the image. Showing the complimentary angles as an unlabeled approximately right angle is within convention. Showing a pair of line segments that do not form a straight line as a straight line is not.

    • sugar_in_your_tea@sh.itjust.works
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      28 days ago

      Exactly.

      Add to this that x is literally impossible to calculate if conventions are not assumed, and absolutely possible to calculate if conventions are followed. Assuming the conventions won’t hold is an irrational position.