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According to the BBC World News, the Russian space project, Znamya, has been trying to place a large mirror in space in order to reflect the sunlight down on northern cities.

The tallest human on record was 8 feet 11.1 inches tall. Robert Pershing Wadlow (1918-1940) would have needed a 54 inch mirror to see himself from head to toe.

A reflection is an isometry, a geometric motion that preserves distance.


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