Ok well I got to thinking. A circle is just an infinite number of angles on a line right? If you think about different shapes, the more corners it has, the larger each angle would have to be for it to meet back. Well if a circle has an infinite number of sides, that means each angle gets infinitely close to 180°. Well this keeps on going 179.9, 179.99999999, until it hits 179.9-repeating. Well it is mathematically proven that .9-repeating, equals 1. This means every angle on a perfect circle is 180 degrees. Well if that is true, that means that circles are just strait lines.

I told my calculus teacher this, and he just told me that that is similar to the theory that disproves motion: In order to move, you have to pass through an infinite number of points, and that of course is impossible. But that theory is obviously wrong because we can all move still.

So what is your input trap-17 members? Do circles exist?

A circle is simply an infinite-gon with all congruent sides. That proves it geometrically.

Math is tricky. From what I was taught, a line is just a bunch of points. Now what is a point? It's hard to define. A circle is similar. It's easier if you just take math for what it is and don't think too deeply. But I do encourage thinking, and you bring up a good point. Hang on with me here as I give you my explanation, but remember I'm just in geometry. 179.99 etc. doesn't equal 180, and never will. It will come very close to 180, but it will never reach it. Therefore, a circle can't be a line because it never is 180. Just my ideas, you can think what you want.

Well if .9999-repeating equals 1 (and if you don't believe me, i've got an equation to prove this), 179.9-repeating must equal 180.

Edit:

Ok I've got the equation: (lets say underlined numbers mean repeating)

x=.9 - Set x to .9 repeating
10x=9.9 - Multiply both sides by 10
10x-x=9.9-x - Subtract X
9x=9 - x is .9 repeating, so subtracting it from 9.9 repeating gives you 9
x=1 - divide by nine
.9=1 - Substitute

This post has been edited by alex7h3pr0gr4m3r: May 13 2007, 09:14 PM

.9 times 10 equals 9 not 9.9

This post has been edited by husker: May 13 2007, 09:20 PM

Why are you guys talking all mathematicly? A circle is the thing that goes on top of stick figures. Or this ( o ) That is a circle I do not really understand all these numbers and stuff?

I guess you didn't bother to read this:

I couldn't do the little line over the number so i did it under.

.9 REPEATING equals 9.9 REPEATING.

Clear that up for you?

This post has been edited by alex7h3pr0gr4m3r: May 14 2007, 01:51 AM

I would say not...

A circle is a collection of contiguous 'points' equal distance from a 'centre' point. I didn't Google this definition, just based it on my understanding of what a circle is/is not. "An infinite number of angles on a straight line"... does not compute, Will Robinson...