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The value of x (sh.itjust.works)

submitted 1 month ago by sjmarf@sh.itjust.works to c/whitepeopletwitter@sh.itjust.works

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[–] TheOakTree@lemm.ee 14 points 1 month ago* (last edited 1 month ago) (3 children)

...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 15 points 1 month ago (1 children)

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

[–] TheOakTree@lemm.ee 8 points 1 month ago

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

[–] NoMoreLurkingToo@startrek.website 2 points 1 month ago (1 children)

The sum of the angles of a triangle are always 180°

[–] TheOakTree@lemm.ee 4 points 1 month ago

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

[–] starman2112@sh.itjust.works 0 points 1 month ago (1 children)

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

[–] taladar@sh.itjust.works 1 points 1 month ago

Especially if you are bad at this stuff you know that drawing anything like that accurately is a real pain and nobody who can avoid it will ever do it to represent anything accurately. That is what labels are for.