this post was submitted on 08 Jun 2025
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A collection of some classic Lemmy memes for your enjoyment

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[–] A_Random_Idiot@lemmy.world 2 points 14 hours ago

Okay, calm down Diogenes

[–] LovableSidekick@lemmy.world 1 points 13 hours ago* (last edited 13 hours ago)

Lines that intersect a circle like that aren't "right angles" tho, they're called "normal" to the circle - in other words pointing directly toward the center. A normal line is at right angles to a tangent line, but not to a curve.

[–] Saarth@lemmy.world 1 points 13 hours ago

Don't the internal angles need to be 90°? Two of those right angles aren't right angles on the inside.

[–] PeriodicallyPedantic@lemmy.ca 19 points 1 day ago

I'm not a math major, but I always considered it that a square is a special case of rectangle, a rectangle is a special case of parallelogram, and a parallelogram a special case of a quadrilateral, a quadrilateral a special case of a simple polygon.

This shape isn't a polygon, so it cannot be a square.

[–] BuboScandiacus@mander.xyz 7 points 1 day ago

Not a polygon

[–] YiddishMcSquidish@lemmy.today 48 points 1 day ago (3 children)

Oh let's get pedantic!

The curved edges technically have infinite "side".

[–] PeriodicallyPedantic@lemmy.ca 7 points 1 day ago (1 children)

Hey, that's my job!

Also I don't think that's technically the technical classification. I think that sidedness is an attribute that simply doesnt apply to curves.
You can approximate curves with some number of sides, and the approximation gets more accurate as the number approaches infinity, but it doesn't actually have the infinite sides.

[–] YiddishMcSquidish@lemmy.today 1 points 1 day ago (1 children)

Very cool! I'm always happy to learn something new!

[–] PeriodicallyPedantic@lemmy.ca 2 points 22 hours ago* (last edited 22 hours ago) (1 children)

I mean, I'm just pedantic; double check with a mathematician, to be sure lol

[–] YiddishMcSquidish@lemmy.today 1 points 21 hours ago (1 children)

I'm genuinely curious, what is your job that requires arithmetic?

[–] PeriodicallyPedantic@lemmy.ca 2 points 21 hours ago (1 children)

I feel like most jobs require arithmetic.
But it is not my career to be a pedant, just my role in life 😜

[–] hansolo@lemmy.today 27 points 1 day ago (10 children)

....and a square has four interior 90 degree angles.

...and based on the infinite number of sides for a curved line aspect, the "90 degree" angles would all be +/- the limit as it approaches zero, so never truly 90 degrees but always an infinite fraction away.

[–] jwmgregory@lemmy.dbzer0.com 2 points 1 day ago

the angles are interior if you go into the scary world of high level maths and their weird fucking geometries.

this is a square, from a certain point of view

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[–] danhab99@programming.dev 11 points 1 day ago (4 children)

Not if this square is a projection of a curved surface

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[–] hikaru755@lemmy.world 21 points 1 day ago* (last edited 1 day ago)
[–] Quadhammer@lemmy.world 21 points 1 day ago (1 children)

Rotate the cone towards you.

Now you see this. 🤯

[–] tetris11@feddit.uk 2 points 22 hours ago (1 children)

uhhh, wait. Under what projection is OP's "square" reduced to an actual square

[–] Machinist@lemmy.world 3 points 22 hours ago (1 children)

It's possible, but there needs to be a thickness in addition to the length and width.

[–] tetris11@feddit.uk 2 points 15 hours ago (1 children)

Im gonna need more than that as an explanation. Sandwiches too if you're making some

[–] Machinist@lemmy.world 2 points 7 hours ago (1 children)

Imagine you have a cookie cutter in that shape. Cut a cookie as thick as the chord of the largest arc.

View the new vertical surface of the longest arc that is now a cylindrical section.

Viola, square. 😁

[–] tetris11@feddit.uk 1 points 3 hours ago

*munches thoughtfully*

this is terrible, but it tastes okay

[–] joel_feila@lemmy.world 84 points 2 days ago (1 children)

The interior angles need to be equal 🤓

[–] FUsername@feddit.org 1 points 1 day ago

Here you can see how things go haywire when skipping minor parts of definitions.

[–] TheLeadenSea@sh.itjust.works 160 points 2 days ago (8 children)

Straight lines. Also two sets of parallel lines. This is one definition of a square, but not the common one.

[–] mcqtom@lemmy.world 54 points 2 days ago* (last edited 2 days ago) (3 children)

I believe these lines are straight with a black hole at the centre.

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[–] halcyoncmdr@lemmy.world 123 points 2 days ago* (last edited 2 days ago) (1 children)

Someone never had to deal with mathematical proofs, only layman's definitions.

All properties of a parallelogram apply:

  • Opposite sides are parallel
  • Opposite sides are congruent
  • Opposite angles are congruent
  • Consecutive angles are supplementary
  • Diagonals bisect each other

AND

  • All angles are congruent
  • All sides are congruent
  • Diagonals are congruent
  • Diagonals are perpendicular
  • Diagonals bisect opposite angles
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[–] burgersc12@mander.xyz 55 points 2 days ago (29 children)

Does no one understand this is a joke, talking about parallel lines and mathematical proofs is pointless when its a fucking meme

[–] dontbelievethis@sh.itjust.works 36 points 1 day ago (1 children)

It's not pointless because you can laugh about a joke and then learn something about math.

They don't cancel each other out. They can be at the same place and still work on their own.

[–] weird@sub.wetshaving.social 16 points 1 day ago

I love memes that are funny on their own, but also provide discussion material.

[–] the_trash_man@lemmy.world 21 points 2 days ago (2 children)

Its wrong though so the joke falls flat

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Or the fun part.

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[–] throwawayacc0430@sh.itjust.works 16 points 1 day ago* (last edited 1 day ago) (8 children)

Wrong. This is a definition of a [pizza] + [the extra peperoni from the other slices that got stuck to that slice because the cutting was imperfect]

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[–] taxiiiii@lemmy.world 9 points 1 day ago

Diogenes go home.

[–] umbrella@lemmy.ml 34 points 2 days ago* (last edited 2 days ago)

ITT: math people going "listen here you little shit"

[–] Pulptastic@midwest.social 39 points 2 days ago (6 children)

A square must also have two pairs of parallel sides.

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[–] Kolanaki@pawb.social 6 points 1 day ago (1 children)
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[–] Ghyste@sh.itjust.works 32 points 2 days ago (8 children)

I get downvoted for bringing it up, but for fuck's sake you're dumping literally everything into this community regardless of the fit. There are a dozen (I'm estimating) other communities that could benefit from the content you post but you have thus far insisted on only posting here.

Can you at least make the tiniest effort to spread content to other communities that would benefit from the increased views and potential subscriptions?

I shall await the fun police and everything's a meme comments.

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[–] JackFrostNCola@aussie.zone 9 points 1 day ago

Tut tut, all these maths books promoting unhealthy square shapes, real squares have curves.

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