Squaring without squad

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Geometric figures are present in every object, be it your television, your house, your computer, your land, your dishes, etc.

The right triangle is in most of the figures like: a square, rectangle, rhombus, even from the center point of a circle you can draw a right triangle

As an example:

We have the line A-B, at the end of which we want to place a line B-C, the same one that is exactly forming an angle of 90 ° with the first one; we proceed as follows:

1) We take any measure in the sense B-A.
2) We draw a time line in the B-C direction and take another measurement.
3) We go to the application and enter the two measurements in tables A and B.
4) Immediately it gives us a measurement, the same one that will give us exactly the point at 90 ° through which the line B-C must pass