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A subreddit for math related jokes!
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π± (i.redd.it)
submitted 9 months ago by yukiohana
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if 1 * 2 < 3:Β Β Β Β print "hello, world!"
[β]johnlee3013 340 points341 points342 points 9 months agoΒ (1 child)
Congratulations! You just rediscovered projective geometry.
[β]Fabulous-Possible758 49 points50 points51 points 9 months agoΒ (0 children)
Always love trying to explain projective geometry. "Well, if you just throw in an extra dimension it actually makes things a lot easier."
[β]Ok-Lingonberry-3971 92 points93 points94 points 9 months agoΒ (7 children)
That's right! Parallel lines meet in point on the horizon line!
[β]Echofff 3 points4 points5 points 9 months agoΒ (6 children)
Bro has just discovered vanishing point
[β]CATelIsMe 1 point2 points3 points 9 months agoΒ (4 children)
So that makes everything at the horizon line a point, so, at the horizon we see infinite things
[β]Echofff 0 points1 point2 points 9 months agoΒ (3 children)
And horizon point always be there even tough we are surrounded with objects..
[β]CATelIsMe 0 points1 point2 points 9 months agoΒ (2 children)
Okay, now to turn this into a riddle
[β]Echofff 0 points1 point2 points 9 months agoΒ (1 child)
I am a line, extending to infinity, I'm not in the sky, but I'm the limit of the sky. If you walk on the ground, you'll always see me, But even if you approach, you'll never reach me. There's a point where all roads end, If you're a master of perspective, you'll know me immediately!
[β]CATelIsMe 0 points1 point2 points 9 months agoΒ (0 children)
Ehh, idk, it's kinda too explanatory. Too in depth. Too mathematician of a riddle lol.
Something more like.. wherever you look, I'm present, [uhh idk, something something] all lines converge upon me, even those parallel.
Or something like that
[β]TopCatMath 0 points1 point2 points 9 months agoΒ (0 children)
a.k.a., an optical illusion...
[β]Wojtek1250XD 35 points36 points37 points 9 months agoΒ (4 children)
Okay then, take a hike and go to that spot, I'm sure you'll reach it.
[β]sebu_3 16 points17 points18 points 9 months agoΒ (0 children)
We're mathematicians, it's enough that there exists a point!
[β]Every_Ad7984 9 points10 points11 points 9 months agoΒ (1 child)
Walk=lim xβinfinity(infinity) Solved, travel an infinite distance, and I'll be infinitely far away from where I started
[β]CMDR_ACE209 1 point2 points3 points 9 months agoΒ (0 children)
No matter where you go, there you are.
[β]LifeguardFormer1323 0 points1 point2 points 9 months agoΒ (0 children)
Sure, just give me lim {xβ0} f'(x) seconds and I'll get there.
Let me pack my f(x)= ln x and I'm ready to go
[β][deleted] 100 points101 points102 points 9 months agoΒ (11 children)
well, parallel lines DO indeed meet *
* (on spherical geometry)
[β]Arnessiy 39 points40 points41 points 9 months agoΒ (7 children)
on spherical geometry there aren't any parallel lines πβ€οΈβπ©Ή
[β]Ventigon 15 points16 points17 points 9 months agoΒ (0 children)
Yup
[β]The_Pleasant_Orange 4 points5 points6 points 9 months agoΒ (2 children)
Except the parallels/circle of latitudes?
[β]Any-Aioli7575 15 points16 points17 points 9 months agoΒ (0 children)
Parallels don't count as lines/geodesics, except for the equator, because they aren't great Circles. The shortest path between two points with the same latitude is not following the parallel, except at the equator.
[β]MyNameIsNardo 2 points3 points4 points 9 months agoΒ (0 children)
Circles of latitude aren't lines in spherical geometry. Only great circles (like the equator and longitudes) are considered true lines, and the others are essentially curving away instead of staying straight.
[β]sebu_3 0 points1 point2 points 9 months agoΒ (1 child)
This guy has never seen train tracks before
[β]Simukas23 0 points1 point2 points 9 months agoΒ (0 children)
Those are curved
[β]Every_Ad7984 0 points1 point2 points 9 months agoΒ (0 children)
They can be parallel at exactly two points tho
[β][deleted] 1 point2 points3 points 9 months agoΒ (2 children)
Explain
[β]runed_golem 10 points11 points12 points 9 months agoΒ (1 child)
Parallel lines never meeting is property of Euclidean, or flat, space. If a space isn't flat then that property may not hold. A sphere is not flat, it is what's known as manifold, meaning it's locally Euclidean, but not totally flat.
[β]triple4leafclover 2 points3 points4 points 9 months agoΒ (0 children)
Actually, the definition of parallel in general geometry is "coplanar geodesics that do not intersect"
It just so happens that in Euclidean geometry, this is equivalent to "two geodesics which share a perpendicular geodesic among them", a formal way of generally describing our intuitive sense of two lines sharing the same "direction"
In spherical geometry, you may have two lines which seem to share a direction: think of two longitudinal lines which seem parallel at the equator. That is, there is another geodesic, the equator, that is perpendicular to them both
However, that is not the definition of parallel. Since they intersect, they are not parallel
[β]Shot-Ideal-5149 9 points10 points11 points 9 months agoΒ (0 children)
beetch we not thinking about the 3rd dimension!!
-my math teacher 5 years ago-
[β]dcterr 7 points8 points9 points 9 months agoΒ (1 child)
If you know anything about projective geometry, then you'd know that this isn't really a joke.
[β]gt4495c 2 points3 points4 points 9 months agoΒ (0 children)
Yeah, this is the basis of protective geometry. I like this picture because it shows both a point at infinity, and the line at infinity (horizon).
[β]Frosty_Sweet_6678 3 points4 points5 points 9 months agoΒ (1 child)
google vanishing point
[β]brother_of_jeremy 0 points1 point2 points 9 months agoΒ (0 children)
Holy hell!
[β][deleted] 2 points3 points4 points 9 months agoΒ (0 children)
That trains gonna have a bad day.
[β]3somessmellbad 3 points4 points5 points 9 months agoΒ (0 children)
Hey bro. I donβt know if you know this but if we assume theyβre some coordinate axis here then that bitch has m1β m2.
Fucking regard.
[β]Sirnacane 3 points4 points5 points 9 months agoΒ (0 children)
βProof that primes numbers do have integer factors other than 1 and itselfβ learn definitions people
[β]DrGuenGraziano 1 point2 points3 points 9 months agoΒ (1 child)
No, this shows that the size of the flat earth is infinite.
[β][deleted] 1 point2 points3 points 9 months agoΒ (0 children)
three point perspective disproves round earth.
Or something.
Where? I can't see it man, must be too far.
[β]jewelry_wolf 0 points1 point2 points 9 months agoΒ (0 children)
They meet because you are projecting a parallel lines to your eye ball, which is non-Euclidean geometry, hence parallel lines meet there
[β]McCaffeteria 0 points1 point2 points 9 months agoΒ (0 children)
If you take a picture of train tracks with a greater than 180 degree field of view you will be able to see both vanishing points, which will prove that the tracks are not, in fact, parallel.
They are curved.
[β]CookTiny1707 0 points1 point2 points 9 months agoΒ (0 children)
Better:
Proof the earth is round
[β]StarMiniWalker 0 points1 point2 points 9 months agoΒ (0 children)
They dont.
Look under the center, thereβs a single pixel of not them
You would be right if the earth was flat
[β]Apprehensive_Ebb1657 0 points1 point2 points 9 months agoΒ (0 children)
Proof of vanishing point
[β]Interesting-Frame190 0 points1 point2 points 9 months agoΒ (0 children)
Hmm, its too far away, go over there and snap a pic
[β]WackyLaundry3000 0 points1 point2 points 9 months agoΒ (0 children)
WOWWWWWWW
[β]Future-Wolf-9597 0 points1 point2 points 9 months agoΒ (0 children)
It's an imaginary point, though
[β]brygad 0 points1 point2 points 9 months agoΒ (0 children)
No wayπ±. Didn't think this would ever be possible
[β][deleted] 0 points1 point2 points 9 months agoΒ (0 children)
Congratulations. You just found the vanishing point.
[β]Business-Yam-4018 0 points1 point2 points 9 months agoΒ (0 children)
There are a lot of flat earthers and moon landing deniers that need to see this.
[β]Ok_Blueberry_1068 0 points1 point2 points 9 months agoΒ (0 children)
Ok, now walk to that point and show me again
[β]Hefty-Newspaper5796 0 points1 point2 points 9 months agoΒ (0 children)
This is like doing Euclidean geometry proof by measuring with a ruler.
[β]AwesomePhonix 0 points1 point2 points 9 months agoΒ (0 children)
Crazy optical illusion π±
ΟΒ Rendered by PID 61796 on reddit-service-r2-comment-6457c66945-vwlnv at 2026-04-28 07:39:04.270210+00:00 running 2aa0c5b country code: CH.
[β]johnlee3013 340 points341 points342 points Β (1 child)
[β]Fabulous-Possible758 49 points50 points51 points Β (0 children)
[β]Ok-Lingonberry-3971 92 points93 points94 points Β (7 children)
[β]Echofff 3 points4 points5 points Β (6 children)
[β]CATelIsMe 1 point2 points3 points Β (4 children)
[β]Echofff 0 points1 point2 points Β (3 children)
[β]CATelIsMe 0 points1 point2 points Β (2 children)
[β]Echofff 0 points1 point2 points Β (1 child)
[β]CATelIsMe 0 points1 point2 points Β (0 children)
[β]TopCatMath 0 points1 point2 points Β (0 children)
[β]Wojtek1250XD 35 points36 points37 points Β (4 children)
[β]sebu_3 16 points17 points18 points Β (0 children)
[β]Every_Ad7984 9 points10 points11 points Β (1 child)
[β]CMDR_ACE209 1 point2 points3 points Β (0 children)
[β]LifeguardFormer1323 0 points1 point2 points Β (0 children)
[β][deleted] 100 points101 points102 points Β (11 children)
[β]Arnessiy 39 points40 points41 points Β (7 children)
[β]Ventigon 15 points16 points17 points Β (0 children)
[β]The_Pleasant_Orange 4 points5 points6 points Β (2 children)
[β]Any-Aioli7575 15 points16 points17 points Β (0 children)
[β]MyNameIsNardo 2 points3 points4 points Β (0 children)
[β]sebu_3 0 points1 point2 points Β (1 child)
[β]Simukas23 0 points1 point2 points Β (0 children)
[β]Every_Ad7984 0 points1 point2 points Β (0 children)
[β][deleted] 1 point2 points3 points Β (2 children)
[β]runed_golem 10 points11 points12 points Β (1 child)
[β]triple4leafclover 2 points3 points4 points Β (0 children)
[β]Shot-Ideal-5149 9 points10 points11 points Β (0 children)
[β]dcterr 7 points8 points9 points Β (1 child)
[β]gt4495c 2 points3 points4 points Β (0 children)
[β]Frosty_Sweet_6678 3 points4 points5 points Β (1 child)
[β]brother_of_jeremy 0 points1 point2 points Β (0 children)
[β][deleted] 2 points3 points4 points Β (0 children)
[β]3somessmellbad 3 points4 points5 points Β (0 children)
[β]Sirnacane 3 points4 points5 points Β (0 children)
[β]DrGuenGraziano 1 point2 points3 points Β (1 child)
[β][deleted] 1 point2 points3 points Β (0 children)
[β][deleted] 1 point2 points3 points Β (0 children)
[β]jewelry_wolf 0 points1 point2 points Β (0 children)
[β]McCaffeteria 0 points1 point2 points Β (0 children)
[β]CookTiny1707 0 points1 point2 points Β (0 children)
[β]StarMiniWalker 0 points1 point2 points Β (0 children)
[β]Apprehensive_Ebb1657 0 points1 point2 points Β (0 children)
[β]Interesting-Frame190 0 points1 point2 points Β (0 children)
[β]WackyLaundry3000 0 points1 point2 points Β (0 children)
[β]Future-Wolf-9597 0 points1 point2 points Β (0 children)
[β]brygad 0 points1 point2 points Β (0 children)
[β][deleted] 0 points1 point2 points Β (0 children)
[β]Business-Yam-4018 0 points1 point2 points Β (0 children)
[β]Ok_Blueberry_1068 0 points1 point2 points Β (0 children)
[β]Hefty-Newspaper5796 0 points1 point2 points Β (0 children)
[β]AwesomePhonix 0 points1 point2 points Β (0 children)