Označeno: Matematika

Vir fotografije: https://www.o-ptlasko.ce.edus.si/2019/03/29/carobna-pomlad-nis/

https://trabalhosparaescola.com.br/8b13cd3674b7a1f6cf2df179f29ddf4f/

https://www.redbubble.com/i/photographic-print/Roman-numeral-XVIII-by-Rayner21/86994127.6Q0TX

https://www.tattooforaweek.com/products/roman-numeral-19-nineteen-tattoo-3-tattoos