This person hasn’t done math past elementary.
So are they like extinct or something?
Submitted 2 weeks ago by LadyButterfly@reddthat.com to memes@sopuli.xyz
https://reddthat.com/pictrs/image/cf5358a7-5773-46cd-bf6f-ca6a8d5c0385.jpeg
Comments
lath@piefed.social 2 weeks ago
OwOarchist@pawb.social 2 weeks ago
I went up to Calculus I in college (along with some physics and engineering), and I’ve done a bit of amateur math outside of school … but the concept of a rhombus was still used exactly zero times.
disorderly@lemmy.world 2 weeks ago
Right there with you, I didn’t use it in analytical geometry, calcs 1-3, diff eqs, or numerical methods. I don’t think it would have shown up in my other math classes either. I’m pretty sure the rhombus is nothing more than a happy shape.
SailorFuzz@lemmy.world 2 weeks ago
This is true for most parallelograms and later polygons.
Daughter just went through parts of middle school that seemed to focus on things like rhombuses and trapezoids. The only thing I"m thinking, as an engineer, is when was the last time I gave af about any of those shapes. I would just reduce them to triangles and rectangles.
Trig skills are WAY more useful that knowing how to calulate specific polygon shapes… I don’t mean to say that middle schools should be learning trig… just that the time spent learning how to do specific shapes is a literal waste of time that they could be using to prepare for later things like trig.
agamemnonymous@sh.itjust.works 2 weeks ago
A rhombus is just an equilateral parallelogram, and parallelograms are the easiest way to approach vector cross products, and you’re 3/4 of the way their when you do tip-to-tail vector addition. They should have come up at least a couple times in geometry. Rhombi pop up as faces in lots of polyhedra, and tiles in lattices. I don’t know much about crystallography, but I’m sure they make an appearance.
ToastedRavioli@midwest.social 2 weeks ago
What is a rhombus but two triangles, my dear
flamingo_pinyata@sopuli.xyz 2 weeks ago
They’re not really mentioned in more advanced math. It’s all polygons.
Ok, triangles are often treated as a special case. But for anything else it’s a n-sided polygon.
Grail@multiverse.soulism.net 2 weeks ago
You mean regular polygons. A rhombus is an irregular polygon.
AnnaFrankfurter@lemmy.ml 2 weeks ago
Nah in my experience everything is a circle. You see π even in places you don’t expect
M137@lemmy.today 2 weeks ago
It’s not even doing math, just watching science videos etc. is enough to hear the word every now and then. This is surely a person who has no interest in learning overall.
queerlilhayseed@piefed.blahaj.zone 2 weeks ago
Every square you ever met is a rhombus that gave up its art career and got a boring 9-5.
MoffKalast@lemmy.world 2 weeks ago
No_Money_Just_Change@feddit.org 2 weeks ago
Looked around my room
Stacks of books Rectangular posters with rectangles on them Windows, curtains, television
Then i saw the plaid shorts i am wearing and had a good laugh
MoffKalast@lemmy.world 2 weeks ago
And then the ceiling and the walls and the floor and the door, and the light switch…
Janx@piefed.social 2 weeks ago
Yeah, it’s pretty good. But it’s not a hexagon, which is the bestagon…
MoffKalast@lemmy.world 2 weeks ago
- 🐝
jaygray91@piefed.zip 2 weeks ago
Lumisal@lemmy.world 2 weeks ago
Wait until they find out it’s all actually triangles
MoffKalast@lemmy.world 2 weeks ago
The only thing that’s greater than humanity’s obsession with rectangles, is computers’ obsession with triangles.
LadyButterfly@reddthat.com 2 weeks ago
grabs tinfoil hat
crater2150@feddit.org 2 weeks ago
If obsession with rectangles makes one human, my cats are definitely human too.
DarrinBrunner@lemmy.world 2 weeks ago
joyjoy@piefed.social 2 weeks ago
Those are parallelograms.
Cyanity@lemmy.zip 2 weeks ago
They would be parallelograms if all 4 sides didn’t have the same length. But they do, so it’s rhombus.
Hupf@feddit.org 2 weeks ago
some_kind_of_guy@lemmy.world 2 weeks ago
ILLUMINATI CONFIRMED!!1!one!!
Imgonnatrythis@sh.itjust.works 2 weeks ago
Isn’t a rhombus just what you call a diamond that’s having a bad day?
Davel23@fedia.io 2 weeks ago
Don't forget the poor trapezoid.
LadyButterfly@reddthat.com 2 weeks ago
RIP
Kolanaki@pawb.social 2 weeks ago
If I ever have my own home, my house will have a rhombus room.
“Don’t you mean a rumpus room?”
Bro, that’s not even a real shape.
Danarchy@lemmy.nz 2 weeks ago
Some pretty rhombus logic if you ask me
Rubanski@discuss.tchncs.de 2 weeks ago
ZILtoid1991@lemmy.world 2 weeks ago
Delete this image now, or in 5 years, Elon Musk will release the Tesla Rhombus, and force it upon Europe!
Allero@lemmy.today 2 weeks ago
Make it higher so it could qualify
Rubanski@discuss.tchncs.de 2 weeks ago
Shit you are right, it’s just a parallelograyhound
mrgoosmoos@lemmy.ca 2 weeks ago
clearly you didn’t learn, since diamonds are a pretty common shape
_MadBits@lemmy.dbzer0.com 2 weeks ago
Haven’t you guys used a kite before?
Mycatiskai@lemmy.ca 2 weeks ago
Every 3 ft square box that you shoved a bunch of 3.25 ft long irregularly shaped items into then closed the flaps on is a rhombus.
Funkt4st1c@lemmy.world 2 weeks ago
A rhombus, otherwise known as a diamond. Its one of the more popular shapes past star, triangle, circle, and square.
meekah@discuss.tchncs.de 2 weeks ago
Hexagon is bestagon
OrteilGenou@lemmy.world 2 weeks ago
Hendecagon is the only one that is also a good source of protein though
treesquid@lemmy.world 2 weeks ago
Take a square. Lean it to the side. Rhombus. Take a diamond, let it fall on one of its sides. Rhombus. The world just keeps a-rhombusin, you just stopped a-noticin’
HocEnimVeni@lemmy.world 2 weeks ago
Fun Fact, many door frames are in fact rhomboid or trapezoidal.
LodeMike@lemmy.today 2 weeks ago
A rectangle is both a rhombus and a trapezoid too
SuperNovaStar@lemmy.blahaj.zone 2 weeks ago
A rectangle is not a rhombus unless it is a square
sin_free_for_00_days@sopuli.xyz 2 weeks ago
LOL.
gandalf_der_13te@feddit.org 2 weeks ago
oh they don’t appear again, but its generalization, the parallelepiped, does:
it’s used to calculate volumes of curved objects. basically you chop down the object into a lot of small parallelepipeds (mentally), and then calculate the volume of each of them small things and sum over them. Done.
to calculate the volume of a parallelepipede, there’s a surprisingly simple mathematical formula. If you have the vectors for the three sides a, b, c, then the volume V = (a × b) · c, where × is the cross product and · is the dot product. it’s very simple and an effective way to calculate volumes of curved / deformed objects.
Batman@lemmy.world 2 weeks ago
Sometimes I think about parallelepipeds then when I reassociate I’m smiling and my fiance is visibly wondering what I’m thinking about. “Don’t worry hun, parallelepipeds again”
noxypaws@pawb.social 2 weeks ago
where × is the cross product and · is the dot product
pardon my ignorance but what the fuck is a “cross product” or a “dot product”? I assumed at first this was multiplication, but then I saw the dot and realized this isn’t anything I’ve ever been taught
gandalf_der_13te@feddit.org 2 weeks ago
en.wikipedia.org/wiki/Cross_product
en.wikipedia.org/wiki/Dot_product
sorry i am too tired to explain in full detail rn
tetris11@feddit.uk 2 weeks ago
it’s used to calculate volumes of curved objects. basically you chop down the object into a lot of small parallelepipeds (mentally), and then calculate the volume of each of them small things and sum over them. Done.
For anyone not quite getting this (like me), to calculate the area under a curve in 2D we were taught to cut it into tiny thin rectangles and sum those up; intergration when those rectangles have a width tending to 0.
For 3D or higher curves (e.g. a pond ripple), a simple rectangle wont cut it as the length of the rectangle might only get the top of a wave, but not capture the crest of it tangential to it. So you create slopey rectangles to approximate that space, and bring the limit to zero to get the area (I think).
My only confusion now is, if I’m deforming a rectangle from one side to approximate the curve just above it, am I not also deforming the bottom of that rectangle in the same way, and creating a forgotten space just above the axis plane?
gandalf_der_13te@feddit.org 2 weeks ago
well, almost. it’s a bit different than that.
what you mean is this:
you approximate an integral with a lot of small thin rectangles, but if the curve’s not entirely rectangular, there’s gonna be some error, which becomes smaller as the rectangles become smaller. this can be ignored if the rectangles are thin enough. and it’s not what i meant.
what i meant is something like this:
you take a piece of elastic fabric, and paint some squares on it. now, if you stretch the fabric, the squares change shape, they become approximately parallelepipeds. this is a good approximation. now, if we want to calculate the total area of that fabric (after stretching), we can calculate the area of each of the small parallelepipeds (which is easy to do with the formula in above comment) and then sum them.
GoTeamBoobies@lemmy.world 2 weeks ago
agamemnonymous@sh.itjust.works 2 weeks ago
Oh man, I forgot about Crayon Physics
weps@lemmy.world 2 weeks ago
do de ca heedron
spacegoat@lemmy.world 2 weeks ago
I changed my excel cells to be rhombuses
Wunz@lemmy.world 2 weeks ago
Does it still work on vertical rows and columns, or are they both diagonal now?
MajorasTerribleFate@lemmy.zip 2 weeks ago
Fun word for you, the up-down-left-right set of directions can be referred to as “orthogonal” - think “orthodox”.
notthebees@reddthat.com 2 weeks ago
OOP needs to eat baklava
GreenKnight23@lemmy.world 2 weeks ago
isn’t that one of those mask things fascists use?
DragonTypeWyvern@midwest.social 2 weeks ago
No, and the word is too Eastern European to keep a meme chain going in English if that’s what you’re going for
Grail@multiverse.soulism.net 2 weeks ago
Rhombuses are really commonly used in trigonometry puzzles. You know, “Here’s a bunch of lines and a couple of angles, find the angle at X.”
kn0wmad1c@programming.dev 2 weeks ago
It’s also called diamond or zoomie square. You know, cuz it’s like a square that’s going so fast the pointy parts start at the tippy top
lichtmetzger@discuss.tchncs.de 2 weeks ago
When I played “Psychonauts: In the Rhombus of Ruin” I got reminded again that this thing actually exists.
MutantTailThing@lemmy.world 2 weeks ago
Wasn’t she that actress from that 2008 movie Doomsday?
Widdershins@lemmy.world 2 weeks ago
No, you’re thinking of Danny DeVito’s wife. They have separated but are still married.
AlteredEgo@lemmy.ml 2 weeks ago
Imagine living as a farmer in medieval Europe near a small village and you make MOST of your shit yourself or with help from the local blacksmith. You’d use all kinds of things and ideas that we don’t use any more. You need to be creative to solve your daily problems and find ways to do stuff efficiently. Like imagine you’d need to dig out a bit of earth for an “almost square” and need to calculate the area and volume of earth you’ll have to move.
I’m not sure what I’m trying to say, but I think modern education is wasted on the modern human.
Jankatarch@lemmy.world 2 weeks ago
We are not curious enough. Dopamine hit of learning doesn’t match videogames.
It makes sense tho, we must be efficient with much fun we have; every other moment is either spent at work, preparing to go work, or driving to work.
AlteredEgo@lemmy.ml 2 weeks ago
Come across any rhombus shaped amazon boxes yet?
CrimeIsLegalNow@ani.social 2 weeks ago
The point of the modern grade school education is to give any and every student enough of a education in any given topic to specialize in any field afterwards, depending on interest and opportunities, as well as create voting citizens that can understand at least the basics of any given social debate.
Modern education isn’t wasted. Some people just waste it afterwards.
Also smiths would literally just do that on vibes lmao.
davetortoise@reddthat.com 2 weeks ago
The word “rhomboidal” exists and you are allows to use it as much as you like
kshade@lemmy.world 2 weeks ago
You know what they say, all busses go to Rhome
Allero@lemmy.today 2 weeks ago
Have you ever seen a square? Congrats, it’s a type of rhombus.
Brickhead92@lemmy.world 2 weeks ago
A square is also a rectangle.
Allero@lemmy.today 2 weeks ago
Indeed
measureyoucanpleasure@piefed.social 2 weeks ago
In my culture, rhombus is the basis of a vagina pictogram. In my culture, rhombus is a popular shape.
https://commons.wikimedia.org/wiki/Category:Czech_vulva_symbols
WhiteOakBayou@lemmy.world 2 weeks ago
This is amazing and thank you for sharing. The ability of the human race to come up with different yet universally understood yonic symbols is heartening. Like no matter what place or time, we’re all in this together and we will be drawing genitalia.
ThatWeirdGuy1001@lemmy.world 2 weeks ago
Hell my dude there’s a cave purple deliberately carved to look like a vag and it’s incredibly detailed.
Humans just seem to love genitals to an alarming but understandable degree
Meron35@lemmy.world 2 weeks ago
Rhombussy
sukhmel@programming.dev 2 weeks ago
That one was great 🤣
CleoMenezesJr@lemmy.eco.br 2 weeks ago
Pica in brazilian Portuguese means dick.
LePoisson@lemmy.world 2 weeks ago
That’s actually amazing I love that just a diamond with a line in the middle is shorthand for vagina, it’s so universal too I bet if you showed that to any human they’d eventually guess the meaning.
measureyoucanpleasure@piefed.social 2 weeks ago
Traditionally you can also draw hair/rays around.
Western civilization seems obsessed with cocks, we need to draw more vulvas. I’m doing my part.
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