Sjmarf@sh.itjust.works to People Twitter@sh.itjust.works · 2 days agoThe value of xsh.itjust.worksimagemessage-square142fedilinkarrow-up11.12Karrow-down120
arrow-up11.1Karrow-down1imageThe value of xsh.itjust.worksSjmarf@sh.itjust.works to People Twitter@sh.itjust.works · 2 days agomessage-square142fedilink
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up20arrow-down6·edit-22 days 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-down5·2 days agoNope I’m not saying that. I’m saying this is a gotcha question that demotivates learners.
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up10arrow-down2·2 days 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-down1·2 days agoThe sum of the angles of a triangle are always 180°
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up6arrow-down2·2 days agoYes, I believe I implied this by suggesting that the sum of angles being 190° is absurd.
minus-squarestarman2112@sh.itjust.workslinkfedilinkarrow-up2arrow-down2·2 days 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-up1·8 hours 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.