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There is a trigonometry rule that no one teaches you before you start in construction. To be quite honest, many professionals spend their entire lives without knowing this simple and wonderful rule. I'm talking about the 3, 4, 5 rule. With it, you can create a layout, locate walls, find the square of a construction site, start installing ceramic tiles. In short, the use of the 3, 4, 5 rule is very widespread in the construction industry. And in this video, I explain in a simple way how to use this rule that is so useful, but almost unknown to the overwhelming majority of construction professionals. High Impact Construction School Website: https://highimpactec.com **DON'T FORGET TO SUBSCRIBE** Subscribe Here: https://bit.ly/3lZcsi9 Instagram Construction School: / escoladaconstrucaohi LIKE US ON FACEBOOK Construction School: / escoladaconstrucaohi LIKE US ON FACEBOOK Jeff Moutinho: / jeffmoutinho #esquadro #ceramica #regra234 #jeffmoutinho