Sjmarf@sh.itjust.works to People Twitter@sh.itjust.works · 1 month agoThe value of xsh.itjust.worksimagemessage-square138fedilinkarrow-up11.13Karrow-down121
arrow-up11.11Karrow-down1imageThe value of xsh.itjust.worksSjmarf@sh.itjust.works to People Twitter@sh.itjust.works · 1 month agomessage-square138fedilink
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up20arrow-down6·edit-21 month ago…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°?
minus-squareMaggoty@lemmy.worldlinkfedilinkarrow-up20arrow-down5·1 month agoNope I’m not saying that. I’m saying this is a gotcha question that demotivates learners.
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up10arrow-down2·1 month agoI see. I agree completely. The only place this belongs is as a thought experiment on making assumptions in geometry.
minus-squareNoMoreLurkingToo@startrek.websitelinkfedilinkarrow-up3arrow-down1·1 month agoThe sum of the angles of a triangle are always 180°
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up6arrow-down2·1 month agoYes, I believe I implied this by suggesting that the sum of angles being 190° is absurd.
minus-squarestarman2112@sh.itjust.workslinkfedilinkarrow-up2arrow-down2·1 month agoNo, 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
minus-squaretaladar@sh.itjust.workslinkfedilinkarrow-up1·1 month agoEspecially 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.
…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°?
Nope I’m not saying that. I’m saying this is a gotcha question that demotivates learners.
I see. I agree completely. The only place this belongs is as a thought experiment on making assumptions in geometry.
The sum of the angles of a triangle are always 180°
Yes, I believe I implied this by suggesting that the sum of angles being 190° is absurd.
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
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.