Triangle Entrelac dishcloth in Tunisian crochet is joined as you go into a square with the outer edges on the bias. The calculation for making this larger is included in the pattern.
The cloth can be worked in one colour, but is more effective in four colours. It requires about 15 yards of each colour per triangle.
Because the outer sides are on the bias you use the same size hook to finish the edge in regular crochet, or to join squares together.
This will be worked in a counter-clockwise direction if you are right-handed, and a clockwise direction if you are left-handed.