The design consists of 14 different rectangles, all with the same area. The total area of the rectangles is equal to the total area of the background.
It may be difficult to believe that the long thin rectangles have the same area as the almost square ones.
Wreck Tangled always attracts interest at exhibitions specifically for mathematicians but seems to lack excitement for knitters. Perhaps the colours should be more striking to make it a ‘work of art’ as well as a mathematical curiosity.
The colours were deliberately chosen to be very much alike because the rectangles are much more alike than they may appear at first glance. Each rectangle has exactly the same area. There are the same number of stitches in every rectangle. The table below is based on the number of stitches in the width and the number of ridges. The actual number of stitches is actually twice this because two rows make one ridge.
In addition, the overall size of the afghan is 240 x 196 = 47040, which is exactly double the area of the rectangles. The background is, therefore, equal in area to all of the rectangles.