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submitted 1 week ago by [email protected] to c/[email protected]
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[-] [email protected] 19 points 6 days 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.

[-] [email protected] 8 points 6 days ago

Not a polygon

[-] [email protected] 3 points 6 days ago

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

[-] [email protected] 2 points 6 days ago

Okay, calm down Diogenes

[-] [email protected] 1 points 6 days ago* (last edited 6 days 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.

[-] [email protected] 161 points 1 week ago

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

[-] [email protected] 53 points 1 week ago* (last edited 1 week ago)

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

[-] [email protected] 36 points 1 week ago

straight, gay, lines are lines. let them be.

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[-] [email protected] 122 points 1 week ago* (last edited 1 week ago)

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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[-] [email protected] 84 points 1 week ago

The interior angles need to be equal 🤓

[-] [email protected] 1 points 6 days ago

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

[-] [email protected] 52 points 1 week ago

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

[-] [email protected] 36 points 1 week ago

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.

[-] [email protected] 16 points 1 week ago

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

[-] [email protected] 21 points 1 week ago

Its wrong though so the joke falls flat

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[-] [email protected] 17 points 1 week ago

We do understand it's a meme and a joke. Just not a very good one, because one can easily poke holes into it.

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[-] [email protected] 47 points 1 week ago

Oh let's get pedantic!

The curved edges technically have infinite "side".

[-] [email protected] 7 points 6 days ago

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.

[-] [email protected] 1 points 6 days ago

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

[-] [email protected] 2 points 6 days ago* (last edited 6 days ago)

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

[-] [email protected] 1 points 6 days ago

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

[-] [email protected] 2 points 6 days ago

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

[-] [email protected] 2 points 6 days ago
[-] [email protected] 27 points 1 week ago

....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.

[-] [email protected] 2 points 6 days 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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[-] [email protected] 39 points 1 week ago

A square must also have two pairs of parallel sides.

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[-] [email protected] 34 points 1 week ago* (last edited 1 week ago)

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

[-] [email protected] 33 points 1 week ago

If it clucks likes a chicken and scratches like a chicken, it's Man.

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[-] [email protected] 31 points 1 week ago

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.

[-] [email protected] 20 points 1 week ago

At least it's better than endless American politics.

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[-] [email protected] 21 points 1 week ago

Rotate the cone towards you.

Now you see this. 🤯

[-] [email protected] 2 points 6 days ago

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

[-] [email protected] 3 points 6 days ago

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

[-] [email protected] 2 points 6 days ago

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

[-] [email protected] 2 points 5 days ago

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. 😁

[-] [email protected] 2 points 5 days ago

*munches thoughtfully*

this is terrible, but it tastes okay

[-] [email protected] 21 points 1 week ago* (last edited 1 week ago)
[-] [email protected] 19 points 1 week ago

Learned this one in 6th grade geometry: drawing a square in thr corner doesn't make it 90°

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[-] [email protected] 16 points 1 week ago* (last edited 1 week ago)

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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[-] [email protected] 15 points 1 week ago

Dammit Diogenes, this is why we don't allow you in the geometry class anymore.

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this post was submitted on 08 Jun 2025
895 points (91.9% liked)

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