That is correct. I am saying that your figure 6 was a part of the 'ideal' template used by the planners, but that the topography of the area convinced the Builders to move the CB. I am also saying that this is where one E-W DC grid line 'should be'.
Here is a link to the page where I present my thesis:
That page begins:
The thesis that I present here is that the Washington, D.C. city planners used more than one image as templates for the street layout of the new Capital City; those being:
The Tree of Life composed of ten spheres (eleven with Daath),
Metatron's Cube made of thirteen circles (12 around 1), and the
Great Pyramid cross-section with base angles of ~52 degrees.
I qualify my thesis with conceptual footnotes about the Washington Monument not being located where it was supposedly planned to be, and about the movement of the Capitol Building.
I point out that the Tree of Life is nested within Metatron's Cube, and both of those were reduced in height so that in the map the triangle matches the pyramid angle. Only if the CB were further south would it fit this triangle on the 0 line at Capitol Street.
60 degree triangles were reduced to 52 degrees. If you connect the corners of the equilateral triangle to the middle of the opposite sides, the diagonals make 30 degree angles, indicating the latitude of the GP. If you then reduce this figure so that the base angles are 52 degrees, we get your figure 6 (2002) image which indicates the tropics with the diagonals.
Had the CB been further south, that image would 'work'. Also remember that while you are showing one triangle, there are really two triangles - the Jeff Mml is the bottom point of the Star of David and Metatron's Cube.
"Because the avenue is now 19.5 degrees (as you have measured it) to meet the elvated CB, still this avenue would have been 23.5 degrees if the CB had remained at the original site.
Is that correct?"
Correct, but I use the term 'ideal' location. The CB is located north of the ideal position determined by Penn Ave, the triangle, being equidistant from Scott Circle, and a line from the Pentagon.
Please note, in relationship to NY Ave as it extends south and west of the WH- the map is ideally symmetrical around 16th Avenue - so just as Penn Ave 'turns up' past the WH in the south east, NY Ave also turns up in the west. The lower left section is not at 23.5 degrees either, as it is pointing to a spot parallel to the CB.