# Pow 2 checkerboard squares

For more information click here. There are 9 vertical lines and 9 horizontal lines. The order does not matter so it's combinations rather than permutations. To form a rectangle you must choose 2 of the 9 vertical lines, and 2 of the 9 horizontal lines. Could you please give me some tips for how to approach this problem?

Rather than looking at specific sizes of rectangles and working out where they can be located we start at the other end and look at locations first. Math Home Search Dr.

The answers are mine and may not be reproduced without my expressed prior consent. As such there are 64 8 x 8 possible end points. If I help you get a job though, you could buy me a pint!

A diagonal starting at one vertex and ending at another will uniquely describe a rectangle.

### Chessboard puzzle

Suppose you have a square checkerboard of some other size - not 8x8 - what is the easiest way to find how many squares there are in it? Could you please give me some tips for how to approach this problem? For more information click here. The vertices are the intersections. And the same vertically. Rectangles in Maths Nomenclature It's always my intention to explain the problems without formal maths nomenclature, with reasoning and common sense. Similarly, the top edge can occupy any one of 8 positions for a 1 x 1 square. This edge can be in any one of 8 positions. I also have advert and analytics providers, my advertising provider Google, does provide personalised adverts unless you specify otherwise, with them. We see trivially that each rectangle can be represented by 4 diagonals. I tried counting the squares individually, but that wouldn't be quick enough for 12x The order does not matter so it's combinations rather than permutations.

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