I want to ask you, can you stand in a straight line? When you say the hitting area is small, you should mean standing sideways. This is generally that some people who are good at kicking their legs like to stand like this, but it is actually unscientific. I can't keep up with boxing and hind legs. The attack speed is not enough.
I wonder how you stand the triangle? Maybe what you said is the correct posture I said, but I have never heard of the term triangular step.
It is the best posture and the most scientific to stand against the enemy with the body at an angle of 45 and the feet at the front and the back.