How can i make Triangle facade surface

Hello
first it is good to give more information on what you want and show that have worked a bit on the subject. You will find here some explanations on how to ask effective questions

Second it is good to give references/credits, it is more easy to search documentation in order to help
This seems to be the Dance Palace from UNStudio

Third, some answers. Your question is a classic question on attractors with triangle pattern