Divide a paper into equal parts
A piece of paper can easily be divided into equal parts. As for 2, 4, or 8 parts, this is very straightforward. But you can also divide a paper into 3, 5, 6, or 7 parts without using a ruler. It is also quite simple to prove the correctness of the resulting partition:
![Divide paper into thirds Coordinate system](/images/instructions/divide-paper-diagrams/divide_into_thirds_math.webp)
The intersection of f and g can be calculated by solving the equation f(x) = g(x) ⟷ 2x = -x + ½ ⟷ x = ⅙
Folding instructions
![Diagram 1](https://origami24.net/images/instructions/divide-paper-diagrams/divide-paper-diagram-01.webp)
![Diagram 2](https://origami24.net/images/instructions/divide-paper-diagrams/divide-paper-diagram-02.webp)
![Diagram 3](https://origami24.net/images/instructions/divide-paper-diagrams/divide-paper-diagram-03.webp)
![Diagram 4](https://origami24.net/images/instructions/divide-paper-diagrams/divide-paper-diagram-04.webp)
![Diagram 5](https://origami24.net/images/instructions/divide-paper-diagrams/divide-paper-diagram-05.webp)
Divide a paper into fifths and sevenths
To divide a paper into seven rectangles of equal size, the paper is divided into thirds first.