Answer
Apr 25, 2026 - 05:07 AM
The 3/4/5 rule is a simple method used in construction to create a right (90-degree) angle when squaring corners. By measuring and marking one side at 3 units, the adjacent side at 4 units, and adjusting the corner until the diagonal between those points measures exactly 5 units, you ensure the corner is perfectly square. This works because these measurements form a right triangle based on the Pythagorean theorem.
