کاپا

Also known as Κ, κ

thumb|right|75px|Variant kappa|class=skin-invert-image thumb|right|Greek word καί written with a handwritten variant of kappa, from the Byzantine period|class=skin-invert-image Kappa (; uppercase Κ, lowercase κ or cursive ; , káppa) is the tenth letter of the Greek alphabet, representing the voiceless velar plosive sound in Ancient and Modern Greek. In the system of Greek numerals, has a value of 20. It was derived from the Phoenician letter kaph (𐤊). Letters that arose from kappa include the Roman K and Cyrillic К. The uppercase form is identical to the Latin K.