Sjmarf to People Twitter · 14 hours agoThe value of ximagemessage-square95fedilinkarrow-up1813arrow-down112
arrow-up1801arrow-down1imageThe value of xSjmarf to People Twitter · 14 hours agomessage-square95fedilink
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up16arrow-down4·edit-29 hours 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-up15arrow-down3·8 hours agoNope I’m not saying that. I’m saying this is a gotcha question that demotivates learners.
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up8·8 hours agoI see. I agree completely. The only place this belongs is as a thought experiment on making assumptions in geometry.
minus-squareNoMoreLurkingToo@startrek.websitelinkfedilinkarrow-up2arrow-down1·8 hours agoThe sum of the angles of a triangle are always 180°
minus-squareTheOakTree@lemm.eelinkfedilinkarrow-up5arrow-down1·8 hours agoYes, I believe I implied this by suggesting that the sum of angles being 190° is absurd.
minus-squarestarman2112linkfedilinkarrow-up2arrow-down1·8 hours 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
…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