Go back
Squaring a circle by just a ruler & compass.

Squaring a circle by just a ruler & compass.

Posers and Puzzles

g

in my heart.

Joined
02 Sep 04
Moves
2706
Clock
01 Oct 04
Vote Up
Vote Down

Originally posted by STANG
I disagree. You need to consider the following ...

How much concern do American's have when allowing for the possibility that the balance of power is going to shift over the next 50 years whilst America continues to be perceived as an aggressor with suspect motives ?

This is a question about how the world will be when America no longer enjoys its curre ...[text shortened]... ing point, which presidential candidate is better for the longer term viability of the world ?
Aah..you seem squared up already.
What does your responce have to do with the puzzle of this thread???

Acolyte
Now With Added BA

Loughborough

Joined
04 Jul 02
Moves
3790
Clock
01 Oct 04
Vote Up
Vote Down

Originally posted by STANG
I disagree. You need to consider the following ...
LOL. And I thought ivanhoe had a one-track mind... 🙄

s

Joined
25 Jul 04
Moves
3205
Clock
03 Oct 04
Vote Up
Vote Down

Originally posted by TheMaster37
.

If you allow distances to be moved like that, you CAN square a circle.[/b]
Repositioning of length is always possible with a ruler & a compass.

Now , given that, how CAN you square a given circle?

r

Joined
04 May 04
Moves
1820
Clock
07 Oct 04
Vote Up
Vote Down

Originally posted by cosmic voice
The iterative method which I have found , is as follows:
Let ACB be the given circle with centre O, AB its (horizontal) diameter, and C is a point on its circumference such that OC is perpendicular on diameter AOB.

With ruler and compass, draw /_BOP1 = 22.5 deg. Take point P1 on OP1=BC in length. Draw perpendicular P1Q1 at P1 on ...[text shortened]... ometrical identity
Z = sin Z*{sec Z/2 * sec Z/4 * sec Z/8......sec Z/(2^n).....to infinity}.
Yes , it seems correct . But there sure is some simpler method.

s

Joined
25 Jul 04
Moves
3205
Clock
07 Oct 04
Vote Up
Vote Down

Originally posted by rspoddar82
Yes , it seems correct . But there sure is some simpler method.
See the site http://www.uwgb.edu/dutchs/PSEUDOSC/SquareCirc.htm

c

Joined
08 Jun 04
Moves
3351
Clock
14 Oct 04
Vote Up
Vote Down

Originally posted by sarathian
See the site http://www.uwgb.edu/dutchs/PSEUDOSC/SquareCirc.htm
I saw this site. This site too gives only approximations. In exact terms this puzzle is an unsolvable classic puzzle.

AThousandYoung
1st Dan TKD Kukkiwon

tinyurl.com/2te6yzdu

Joined
23 Aug 04
Moves
26758
Clock
18 Oct 04
Vote Up
Vote Down

"Square a circle" is very ambiguous. I thought you meant make the smallest square that could contain the circle.

So we're supposed to make a square with the same area as the circle?

s

Joined
25 Jul 04
Moves
3205
Clock
25 Oct 04
Vote Up
Vote Down

Originally posted by AThousandYoung
"Square a circle" is very ambiguous. I thought you meant make the smallest square that could contain the circle.

So we're supposed to make a square with the same area as the circle?
Squaring a circle means constructing a square equal to a given circle in area.

D

Joined
01 Oct 04
Moves
1983
Clock
25 Oct 04
Vote Up
Vote Down

"Squaring the circle" in an ancient problem, it is impossible to do, check any math site and they'll mention it. Every now and then some charlatan will claim they've done it, but no one ever has.

AThousandYoung
1st Dan TKD Kukkiwon

tinyurl.com/2te6yzdu

Joined
23 Aug 04
Moves
26758
Clock
25 Oct 04
Vote Up
Vote Down

?

Determine the area of the circle. The sides of the square have the square root of that area for sides. What's so hard about that?

o

top of the world

Joined
04 Jul 04
Moves
3603
Clock
27 Oct 04
Vote Up
Vote Down

Originally posted by AThousandYoung
?

Determine the area of the circle. The sides of the square have the square root of that area for sides. What's so hard about that?
Ah yes. You are right , but the iterative construction suggested in the post of Cosmic Voice (see post on page 1) does square a given circle to any desired degree of accuracy, as close as one likes to specify.

o

top of the world

Joined
04 Jul 04
Moves
3603
Clock
27 Oct 04
Vote Up
Vote Down

Originally posted by Dodger11
"Squaring the circle" in an ancient problem, it is impossible to do, check any math site and they'll mention it. Every now and then some charlatan will claim they've done it, but no one ever has.
It is like this - no one can write the exact numerical value of pi,this is absolutely true.

BUT ,one CAN write its value correct to as many decimal places as you want , by using a suitable fast convergent sequence or series.

Cookies help us deliver our Services. By using our Services or clicking I agree, you agree to our use of cookies. Learn More.