In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°.
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Coolidge died suddenly from coronary thrombosis at “The Beeches” on January 5, 1933, at 12:45 p.m., aged 60. Shortly before his death, he confided to an old friend: “I feel I no longer fit in with these times.”
