The letter "Κ" is the 10th letter of the Greek alphabet. It is pronounced as "kappa" and corresponds to the letter "K" in the Latin alphabet. In the Greek numeral system, it has a value of 20. The letter is commonly used in various fields, including mathematics and science, to represent constants and variables. In addition to its linguistic significance, "Κ" is also used in various cultural contexts. For example, it appears in the names of many Greek cities and historical figures, such as Κωνσταντινούπολη (Constantinople) and Κλέοπατρα (Cleopatra). Its shape and sound have influenced the development of other alphabets, including the Latin and Cyrillic scripts.