[Caymus]

Which line is curved?

[Two Bills]

That is brain damage!

[dewilson58]

[MikeVillages]

Interesting.
None of them but the one in your peripheral vision looked like they curve as you look at different areas.

[villagetinker]

Originally Posted by MikeVillages

Interesting.
None of them but the one in your peripheral vision looked like they curve as you look at different areas.

Agree, and after 2 scotches all of the lines are curved!!!!

[Stu from NYC]

Very good

[mtdjed]

Originally Posted by Caymus

Which line is curved?

Now you have done it. My macular degeneration has matured.

[Taltarzac725]

Ouch. Hurts my eyes to look.

[Harold.wiser]

Pretty cool! 😀

[FredMitchell]

When the radius of a circular arc is sufficiently large, the arc becomes indistiguishable from a straight line.

That is why geometry was so successful in early historic times and even today for many situations. The lines were all "straight enough" even when drawn on the earth's surface.

[Steve]

Originally Posted by Caymus

Which line is curved?

I think I see my house in the third square from the right and two down. It's the one with the grey roof.

[Ross]

None

[Cdavidjam]

What lines

[Velvet]

Depends how you look at the picture. Amazing! Visual artist like to lead the eye.

[OrangeBlossomBaby]

Originally Posted by FredMitchell

When the radius of a circular arc is sufficiently large, the arc becomes indistiguishable from a straight line.

That is why geometry was so successful in early historic times and even today for many situations. The lines were all "straight enough" even when drawn on the earth's surface.

Well that's because the earth is flat, so all those lines would be straight. This is known fact, my position is unassailable.