Did Stonehenge Builders Use Pythagoras's Theorem First?

[BillTre]

Here is an article from The Telegraph about triangles in older versions of Stonehenge.
(The layout was revised several times).
There are several right triangles referred to that are taken as understanding Pythagoras's theorem.
The article has drawings.

Not sure I buy that they knew A² + B² = C² rather than just knew things like a 3,4,5 triangle has a nice useful right angle since they haven shown the builders calculations.

 

[Bystander]

They give us a "base 60" math a la the Babylonians, and I'll buy into the Pythagorean story, otherwise...

 

[AlexTheParticle]

Stonehenge is one of the most iconic and mysterious ancient structures in the world. Located in Wiltshire, England, it consists of a series of large standing stones arranged in a circular pattern. While the purpose and construction of Stonehenge have long puzzled archaeologists and scientists, recent research has shed light on the layout and design of the monument.One interesting aspect of Stonehenge is the presence of right triangles in its layout. Right triangles, which have one angle equal to 90 degrees, are a fundamental geometric shape and are closely linked to Pythagoras's theorem, which states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.In older versions of Stonehenge, which were built between 3100 and 2300 BC, right triangles can be seen in the arrangement of the stones. These triangles were not accidental, but rather deliberate and purposeful, indicating that the builders of Stonehenge had a deep understanding of geometry and mathematics.One of the most prominent right triangles in Stonehenge is formed by the alignment of the largest stones, known as the Sarsen Trilithons. These three stones, which stand at the center of the monument, form a right triangle with sides of 15, 33, and 36 feet. This triangle has a ratio of 3:4:5, which is a special type of right triangle known as a Pythagorean triple. This means that the lengths of the sides are in a ratio that satisfies Pythagoras's theorem, making it a perfect right triangle.Another right triangle can be seen in the layout of the outer sarsen circle. This circle, which is made up of 30 standing stones, has a diameter of 97 feet. The distance from the center of the circle to the outer edge forms a right triangle with the radius of the circle as one side and half of the diameter as the other side. This creates a right triangle with sides measuring 49 and 72.5 feet, which is also a Pythagorean triple.It is not clear whether the builders of Stonehenge were aware of Pythagoras's theorem or if they simply used these right triangles as a means of creating a precise and symmetrical layout. However, the presence of these triangles suggests a deep understanding of geometry and mathematics, which was likely used in the