What squaring method helps ensure a 90-degree angle in building corners?

The 3-4-5 method is a practical technique used in construction to ensure that corners form a perfect 90-degree angle. This method is based on the fundamental properties of right triangles, specifically that the sides of a right triangle adhere to the Pythagorean theorem, which states that the sum of the squares of the two shorter sides (the legs) is equal to the square of the longest side (the hypotenuse).

When applying the 3-4-5 method, you measure and mark a distance of 3 units along one leg and 4 units along the other leg from the corner point. By connecting the two marks, the length of the diagonal between these two points should equal 5 units. If the lengths measure correctly, the angle formed at the corner is guaranteed to be 90 degrees. This method is particularly valued in construction and carpentry because it is simple, quick, and requires minimal tools—just a measuring tape and a chalk line or marker.

Other methods might have their own uses but do not specifically focus on establishing a right angle as effectively or simply as the 3-4-5 method. For example, the circle method is often used for layout work but does not inherently ensure a 90