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Diagonals in a rectangle

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Diagonals in a Rectangle.

In the case of a 2 X 2 rectangle, or a 3 X 5 rectangle, we can simply count. However, can we make a decision about a 100 X 167 or a 3600 X 288 rectangle? In general, given an N X K rectangle, how many grid squares are crossed by its diagonal?

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Solution Summary

This shows how to find the number of diagonals in a n x k rectangle.

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