Monday, September 15, 2008

180

180 = 22 x 32 x 5.

1803 is the sum of consecutive cubes: 1803 = 63 + 73 + 83 + . . . + 683 + 693.

180 has a representation as a sum of two squares: 180 = 62 + 122.

In the plane, the interior angles of a triangle add up to 180 degrees.

The number of Fahrenheit degrees between the freezing point of water, 32, and its boiling point, 212, is 180.

Source: Wells, D. 1997.
The Penguin Dictionary of Curious and Interesting Numbers, rev. ed.

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