This person hasn’t done math past elementary.
So are they like extinct or something?
Submitted 1 month ago by LadyButterfly@reddthat.com to memes@sopuli.xyz
https://reddthat.com/pictrs/image/cf5358a7-5773-46cd-bf6f-ca6a8d5c0385.jpeg
Comments
lath@piefed.social 1 month ago
OwOarchist@pawb.social 1 month 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 1 month 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 1 month 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 1 month 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 1 month ago
What is a rhombus but two triangles, my dear
flamingo_pinyata@sopuli.xyz 1 month 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 1 month ago
You mean regular polygons. A rhombus is an irregular polygon.
AnnaFrankfurter@lemmy.ml 1 month ago
Nah in my experience everything is a circle. You see π even in places you don’t expect
M137@lemmy.today 1 month 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 1 month ago
Every square you ever met is a rhombus that gave up its art career and got a boring 9-5.
MoffKalast@lemmy.world 1 month ago
No_Money_Just_Change@feddit.org 1 month 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 1 month ago
And then the ceiling and the walls and the floor and the door, and the light switch…
Janx@piefed.social 1 month ago
Yeah, it’s pretty good. But it’s not a hexagon, which is the bestagon…
MoffKalast@lemmy.world 1 month ago
- 🐝
jaygray91@piefed.zip 1 month ago
Lumisal@lemmy.world 1 month ago
Wait until they find out it’s all actually triangles
MoffKalast@lemmy.world 1 month ago
The only thing that’s greater than humanity’s obsession with rectangles, is computers’ obsession with triangles.
LadyButterfly@reddthat.com 1 month ago
grabs tinfoil hat
crater2150@feddit.org 1 month ago
If obsession with rectangles makes one human, my cats are definitely human too.
DarrinBrunner@lemmy.world 1 month ago
joyjoy@piefed.social 1 month ago
Those are parallelograms.
Cyanity@lemmy.zip 1 month 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 1 month ago
some_kind_of_guy@lemmy.world 1 month ago
ILLUMINATI CONFIRMED!!1!one!!
Imgonnatrythis@sh.itjust.works 1 month ago
Isn’t a rhombus just what you call a diamond that’s having a bad day?
Davel23@fedia.io 1 month ago
Don't forget the poor trapezoid.
LadyButterfly@reddthat.com 1 month ago
RIP
Kolanaki@pawb.social 1 month 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 1 month ago
Some pretty rhombus logic if you ask me
Rubanski@discuss.tchncs.de 1 month ago
ZILtoid1991@lemmy.world 1 month ago
Delete this image now, or in 5 years, Elon Musk will release the Tesla Rhombus, and force it upon Europe!
Allero@lemmy.today 1 month ago
Make it higher so it could qualify
Rubanski@discuss.tchncs.de 1 month ago
Shit you are right, it’s just a parallelograyhound
mrgoosmoos@lemmy.ca 1 month ago
clearly you didn’t learn, since diamonds are a pretty common shape
_MadBits@lemmy.dbzer0.com 1 month ago
Haven’t you guys used a kite before?
Mycatiskai@lemmy.ca 1 month 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 1 month 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 1 month ago
Hexagon is bestagon
OrteilGenou@lemmy.world 1 month ago
Hendecagon is the only one that is also a good source of protein though
HocEnimVeni@lemmy.world 1 month ago
Fun Fact, many door frames are in fact rhomboid or trapezoidal.
LodeMike@lemmy.today 1 month ago
A rectangle is both a rhombus and a trapezoid too
SuperNovaStar@lemmy.blahaj.zone 1 month ago
A rectangle is not a rhombus unless it is a square
sin_free_for_00_days@sopuli.xyz 1 month ago
LOL.
treesquid@lemmy.world 1 month 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’
GoTeamBoobies@lemmy.world 1 month ago
agamemnonymous@sh.itjust.works 1 month ago
Oh man, I forgot about Crayon Physics
gandalf_der_13te@feddit.org 1 month 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 1 month 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 1 month 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 1 month 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 1 month 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 1 month 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.
weps@lemmy.world 1 month ago
do de ca heedron
spacegoat@lemmy.world 1 month ago
I changed my excel cells to be rhombuses
Wunz@lemmy.world 1 month ago
Does it still work on vertical rows and columns, or are they both diagonal now?
MajorasTerribleFate@lemmy.zip 1 month ago
Fun word for you, the up-down-left-right set of directions can be referred to as “orthogonal” - think “orthodox”.
notthebees@reddthat.com 1 month ago
OOP needs to eat baklava
GreenKnight23@lemmy.world 1 month ago
isn’t that one of those mask things fascists use?
DragonTypeWyvern@midwest.social 1 month 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 1 month 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 1 month 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 1 month ago
When I played “Psychonauts: In the Rhombus of Ruin” I got reminded again that this thing actually exists.
MutantTailThing@lemmy.world 1 month ago
Wasn’t she that actress from that 2008 movie Doomsday?
Widdershins@lemmy.world 1 month ago
No, you’re thinking of Danny DeVito’s wife. They have separated but are still married.
AlteredEgo@lemmy.ml 1 month 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 1 month 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 1 month ago
Come across any rhombus shaped amazon boxes yet?
CrimeIsLegalNow@ani.social 1 month 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 1 month ago
The word “rhomboidal” exists and you are allows to use it as much as you like
kshade@lemmy.world 1 month ago
You know what they say, all busses go to Rhome
Allero@lemmy.today 1 month ago
Have you ever seen a square? Congrats, it’s a type of rhombus.
Brickhead92@lemmy.world 1 month ago
A square is also a rectangle.
Allero@lemmy.today 1 month ago
Indeed
measureyoucanpleasure@piefed.social 1 month 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 1 month 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 1 month 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 1 month ago
Rhombussy
sukhmel@programming.dev 1 month ago
That one was great 🤣
CleoMenezesJr@lemmy.eco.br 1 month ago
Pica in brazilian Portuguese means dick.
LePoisson@lemmy.world 1 month 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 1 month 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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