A four-fold ruler, often referred to as a folding rule or carpenter's rule, is a measuring instrument made of wood, metal, or plastic that can be folded into sections for easy storage and portability. Typically, it consists of four straight sections joined by flexible hinges, allowing it to be extended to various lengths. It is commonly used in carpentry, woodworking, and other measurement tasks where accurate lengths are needed. The ruler usually features measurement markings on both sides, often in both imperial and metric units.
You get four rectangles
It means 4 lines of symmetry as for example a square has 4 lines of symmetry
This is a little bit like asking why a square has four sides. A regular pentagon is defined in such a way as to require that it has 5-fold rotational symmetry.
Fold it 10 times....
The last fold will be ineffective in making squares. If you fold a square in half it becomes two rectangles - one on top of the other. This "square" (pardon me, but the site doesn't do accurate 'drawing') shows the folding process. |--------------------------------| |........................................| |........................................| |........................................| |........................................| |........................................| |........................................| |........................................| |........................................| |........................................| |........................................| |--------------------------------| when folded back, becomes |----------------| |....................| |....................| |....................| |....................| |....................| |....................| |....................| |....................| |....................| |....................| |----------------| and when that is folded upwards, it becomes four squares |----------------| |....................| |....................| |....................| |....................| |----------------| The third fold makes eight rectangles.... |--------| |..........| |..........| |..........| |..........| |--------| And the fourth fold makes sixteen squares... |--------| |..........| |..........| |--------| Another fold - a fifth - would bring us back to rectangles again. There would be 32 of them. |----| |.....| |.....| |----|
You get four rectangles
get the paper and put it long ways then get a ruler divide it into 3es if cant to bad then tick the divied area then fold the tick marks
Fold it in half diagonally.
bend
Isnt it fold
Matthew, Mark, Luke and John
reel
the ruler was used to measure the length of my book.
Quadruple means four-fold, or four times. I now have quadruple the money that I started with.
After single, double, and triple comes quadruple, which refers to four times or four-fold.
4/5 = 0.8 is that what you are looking for?
a CD case that folds 4 times.