Geometry 2

The rings depicted in the above diagram are the Sarsen Circle and the Y holes. All other ring structures have been omitted for clarity.

You will observe that a line ac has been drawn, parallel to the phase 3 axis centre, which is a Sarsen Circle radius from the centre of Stonehenge. (Shown as X )

To simplify the geometry please consult the diagram below, which is an enlarged section of the centre without the background clutter of the Stonehenge drawing.


	If we assume that the Sarsen Circle has unit radius (shown as aX), then we can easily compute the distance of the Y ring radius (shown as XY)

If we take the Sarsen Circle radius aX as being equal to 1, then the following applies by Pythagorean derivation.

An arc bX of unit radius is drawn from a. Where it intersects the Sarsen Circle is O.

Therefore if aX = 1 then ao also equals 1 and aY must equal 2 . Consequently XY must equal


	(see adjacent diagram)

GEOMETRIC CONCLUSION

The radius of the Stonehenge Y ring equals


	if the Sarsen Circle radius is 1.


	Click Here to find out the comparative relationship of the other rings to the Sarsen Radius


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