@ned nitpick: this isnt actually pythagoras, this is just triangle equality (for any triangle ABC, a+b>c)

@susul @ned

The Pythagorean theorem is just a special case of the law of cosigns.

C^2 = A^2 + B^2 + 2ABcos(theta) where theta is the angle between A and B.

Oh, Wait ... was this a joke?

@ned I literally use the Pythagorean theorem, trigonometry, and other geometry every single day—artist/designer
@ned also students playing video games:

@7331 @ned For more direct usage, students going to play a wargame (or wargamey TTRPG) after school.

(A dragon's current position is 50' above ground, above a spot on the flat battlemap 65' away from your ground position. You're wielding a pike with 10' reach, and a spell on you grants you a fly speed of 40'. A charge maneuver allows you to move up to twice your normal rate and still make an attack, at a cost of making you more vulnerable to attack. Can you charge the dragon this round?)

@ned Problem is, that at school we often don't learn about context, just facts. Give the kids context, and they'll learn much easier.
@ned User experience Vs Planning
@ned If the designer had used common sense, more to the point.
@ned What if a diagonal is just an infinite number of vertices joined together. How does that work?
@ned Technoblade used the Pythagorean theorem to be good at Minecraft PVP. It is therefore objectively useful.
@ned Geometry educational trail ...