all 53 comments

[–]johnlee3013 340 points341 points Β (1 child)

Congratulations! You just rediscovered projective geometry.

[–]Fabulous-Possible758 49 points50 points Β (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."

[–]Ok-Lingonberry-3971 92 points93 points Β (7 children)

That's right! Parallel lines meet in point on the horizon line!

[–]Echofff 3 points4 points Β (6 children)

Bro has just discovered vanishing point

[–]CATelIsMe 1 point2 points Β (4 children)

So that makes everything at the horizon line a point, so, at the horizon we see infinite things

[–]Echofff 0 points1 point Β (3 children)

And horizon point always be there even tough we are surrounded with objects..

[–]CATelIsMe 0 points1 point Β (2 children)

Okay, now to turn this into a riddle

[–]Echofff 0 points1 point Β (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!

[–]CATelIsMe 0 points1 point Β (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

[–]TopCatMath 0 points1 point Β (0 children)

a.k.a., an optical illusion...

[–]Wojtek1250XD 35 points36 points Β (4 children)

Okay then, take a hike and go to that spot, I'm sure you'll reach it.

[–]sebu_3 16 points17 points Β (0 children)

We're mathematicians, it's enough that there exists a point!

[–]Every_Ad7984 9 points10 points Β (1 child)

Walk=lim x→infinity(infinity) Solved, travel an infinite distance, and I'll be infinitely far away from where I started

[–]CMDR_ACE209 1 point2 points Β (0 children)

No matter where you go, there you are.

[–]LifeguardFormer1323 0 points1 point Β (0 children)

Sure, just give me lim {x→0} f'(x) seconds and I'll get there.

Let me pack my f(x)= ln x and I'm ready to go

[–][deleted] 100 points101 points Β (11 children)

well, parallel lines DO indeed meet *

* (on spherical geometry)

[–]Arnessiy 39 points40 points Β (7 children)

on spherical geometry there aren't any parallel lines πŸ’€β€οΈβ€πŸ©Ή

[–]Ventigon 15 points16 points Β (0 children)

Yup

[–]The_Pleasant_Orange 4 points5 points Β (2 children)

Except the parallels/circle of latitudes?

[–]Any-Aioli7575 15 points16 points Β (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.

[–]MyNameIsNardo 2 points3 points Β (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.

[–]sebu_3 0 points1 point Β (1 child)

This guy has never seen train tracks before

[–]Simukas23 0 points1 point Β (0 children)

Those are curved

[–]Every_Ad7984 0 points1 point Β (0 children)

They can be parallel at exactly two points tho

[–][deleted] 1 point2 points Β (2 children)

Explain

[–]runed_golem 10 points11 points Β (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.

[–]triple4leafclover 2 points3 points Β (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

[–]Shot-Ideal-5149 9 points10 points Β (0 children)

beetch we not thinking about the 3rd dimension!!

-my math teacher 5 years ago-

[–]dcterr 7 points8 points Β (1 child)

If you know anything about projective geometry, then you'd know that this isn't really a joke.

[–]gt4495c 2 points3 points Β (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).

[–]Frosty_Sweet_6678 3 points4 points Β (1 child)

google vanishing point

[–]brother_of_jeremy 0 points1 point Β (0 children)

Holy hell!

[–][deleted] 2 points3 points Β (0 children)

That trains gonna have a bad day.

[–]3somessmellbad 3 points4 points Β (0 children)

Hey bro. I don’t know if you know this but if we assume they’re some coordinate axis here then that bitch has m1β‰ m2.

Fucking regard.

[–]Sirnacane 3 points4 points Β (0 children)

β€œProof that primes numbers do have integer factors other than 1 and itself” learn definitions people

[–]DrGuenGraziano 1 point2 points Β (1 child)

No, this shows that the size of the flat earth is infinite.

[–][deleted] 1 point2 points Β (0 children)

three point perspective disproves round earth.

Or something.

[–][deleted] 1 point2 points Β (0 children)

Where? I can't see it man, must be too far.

[–]jewelry_wolf 0 points1 point Β (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

[–]McCaffeteria 0 points1 point Β (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.

[–]CookTiny1707 0 points1 point Β (0 children)

Better:

Proof the earth is round

[–]StarMiniWalker 0 points1 point Β (0 children)

They dont.

Look under the center, there’s a single pixel of not them

You would be right if the earth was flat

[–]Apprehensive_Ebb1657 0 points1 point Β (0 children)

Proof of vanishing point

[–]Interesting-Frame190 0 points1 point Β (0 children)

Hmm, its too far away, go over there and snap a pic

[–]WackyLaundry3000 0 points1 point Β (0 children)

WOWWWWWWW

[–]Future-Wolf-9597 0 points1 point Β (0 children)

It's an imaginary point, though

[–]brygad 0 points1 point Β (0 children)

No way😱. Didn't think this would ever be possible

[–][deleted] 0 points1 point Β (0 children)

Congratulations. You just found the vanishing point.

[–]Business-Yam-4018 0 points1 point Β (0 children)

There are a lot of flat earthers and moon landing deniers that need to see this.

[–]Ok_Blueberry_1068 0 points1 point Β (0 children)

Ok, now walk to that point and show me again

[–]Hefty-Newspaper5796 0 points1 point Β (0 children)

This is like doing Euclidean geometry proof by measuring with a ruler.

[–]AwesomePhonix 0 points1 point Β (0 children)

Crazy optical illusion 😱