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bearisgray 06-25-2014 07:53 AM

Increasing (or decreasing) a block size
 
When I increase a block size from 6x6 to 12x12 -

doesn't it seem to be logical to say that I DOUBLE the size of the block?

But actually, the area of the block will be QUADRUPLED!

6x6 = 36
12x12 = 144


Or the other way around - when I decrease a block size from 12x12 to 6x6 -

it seems logical to me to say that I cut the size by half.

However, the area of the smaller block is only 1/4 the size of the larger block.

12x12 = 144
6x6 = 36

ckcowl 06-25-2014 08:09 AM

Which is why it takes (4) 6 1/2" squares to make (1) 12" block...often people do not realize this until they try to just double everything, then wonder why it's not working. Glad you realized it. :)

ghostrider 06-25-2014 08:27 AM

The doubling is of the square formed by the diagonals of the four inset squares. Socrates explained it best.
http://www.cut-the-knot.org/proofs/half_sq.shtml

bearisgray 06-25-2014 08:39 AM


Originally Posted by ghostrider (Post 6773708)
The doubling is of the square formed by the diagonals of the four inset squares. Socrates explained it best.
http://www.cut-the-knot.org/proofs/half_sq.shtml


Now that is almost too much for my mind to absorb! :) Thank you for the link.

ghostrider 06-25-2014 08:42 AM

Anything for you, Bear! :)

citruscountyquilter 06-25-2014 09:50 AM

One just never knows what they are going to find on Quilting Board!

Neesie 06-25-2014 10:23 AM

Isn't math marvelous? :thumbup:

loisf 06-25-2014 10:49 AM

Yes, it is, Neesie. And I love your Dawkins' quote.

Neesie 06-25-2014 10:53 AM


Originally Posted by loisf (Post 6773938)
Yes, it is, Neesie. And I love your Dawkins' quote.

Thanks, Loisf! I find it fits so many situations, on so many levels! :D

Havplenty 06-25-2014 11:31 AM

On now this is really deep. :D


Originally Posted by ghostrider (Post 6773708)
The doubling is of the square formed by the diagonals of the four inset squares. Socrates explained it best.
http://www.cut-the-knot.org/proofs/half_sq.shtml



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