Glyph
- Bars
- 3
- Dots
- 3
- Zero sign
- no
eighteen / U+1D2F2
Eighteen is shown as 3 bars plus 3 dots.
As one base-20 digit, 18 belongs to the 0 to 19 set. For numbers above 19, Maya numerals can stack vertically with the ones place at the bottom and higher places above it.
The Maya number 18 is written with three bars and three dots. The bars count fifteen and the dots add three, so the mark totals 18.
As a single vigesimal digit, 18 belongs to the 0 to 19 set. When a count is higher than 19, this same mark can sit in one vertical place while another place above it counts groups of 20.
The representation follows the Unicode Mayan Numerals block and the scholarly description of Maya positional notation.