I'm a Hindi speaker in training, but not music theory. I'm curious what they're named for?

Quoting the article:

> For instance, Teentaal (16 beats) is made up of four sections of four beats each, while Ektaal (12 beats) is made up of six sections of two beats each.

why is 'three rhythm' four beats/bar (and four bars repeating) and 'one rhythm' two (six)?