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Pi (letter)
Pi
(; Greek: , uppercase
Π
, lowercase
π
) is the sixteenth letter of the
Greek alphabet
, representing . In the system of
Greek numerals
it has a value of 80. It was derived from the
Phoenician letter
pe . Letters that arose from pi include
Cyrillic
Pe
(П, п),
Coptic
pi , and
Gothic
pairthra
.
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