1. Partial vigesimal systems are found in some European languages : Georgian. 2. Vigesimal systems are known in several European languages : Basque.3. Vennemann regards the vigesimal system as a trait of the Vasconic language. 4. Each succeeding level of multiplication followed the vigesimal system. 5. The system was vigesimal ( base twenty ), so it has twenty digits. 6. The vigesimal numbering system, however, and the calendar, reflect Ibibio norms. 7. The system is, as is the Basque system of counting in general, vigesimal . 8. In these languages the systems are vigesimal up to 99, then decimal from 100 up. 9. Four cardinal directions, four seasons, duodecimal system, and vigesimal system are based on four. 10. Georgian has a vigesimal numeric system like Basque or French, based on the counting system of 20.
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