On: A Short Story for Engineers

[whack]

> He had seen a triangle with angles not adding up to 180 degrees

Genuinely curious. How does one even draw a triangle whose angles don't add up to 180 degrees?

[roryokane → whack]

My guess is that the triangle was drawn correctly, but its interior angles had labels like “55°”, and those labels didn't add up to 180°. So the triangle could be constructed differently from intended, depending on which two of the angles the constructors used for reference.