Recalling Robert's opinion that Ovason is "probably the best-qualified writer to ascertain these symbols", you will note that he chose to limit himself
to one triangle in all of the map, as far as geoemtric symbols go. Ovason never mentions the pentagram.

Ovason suggests that Penn Ave was aligned to a particular angle in order to take advantage of a stellar alignment and connect the city to the sky
ceremonially. Above you can see the current PA in blue. In red we see the parallel lines of the pentagram extended. If the CB had been a little bit
(600 feet) to the south PA would have been straight from Georgetown to the East Branch. Note that this line is directed toward the point where Sirius
crosses the horizon at it's heliacal rising, not the middle section of the avenue.
As we saw, the real alignment is to Regulus which is less than three degrees from the sun, and the triangle is 50 degrees wide. The four degree shift in
the alignment that would occur if the CB had been 600 feet south would not be significant in this scheme and does not appear to account for a radical bend
in Penn Ave.

The blue rectangle above indicates the point on the straight line where the CB would have fallen, and as you can see it is on the side of a steep hill.
Can you read topo(graphic) maps? I do not believe that the CB was moved from this location in order to align with Regulus more closely. BTW the angles of the
red diagonals to a horizontal line is 23.5 degrees like the tropics. The lines in the pentagram generate a 23 degree grid over the othogonal grid in the
map.
Ovason claims that the CB was positioned first, then the WH was set to this alignment, and the rest of the city fell in around this line. I recommend that
the original intent was for a straight line from G'town to the river, with segements divided equally by the WH and CB. When a line bisects an angle of an
equilateral triangle it also biscects the other side of the triangle and the new angles formed are 30 degrees each. The Great Pyramid is located just south
of 30 degrees north lat., where an inscribed hexagram touches a circle. If we reduce the equilateral triangle so that the base angles are 52 degrees then
these diagonal angles are converted to 23.5. These are the angles that we see in the map, globe and pyramid.
I contend that, when confronted with the problem of the steep hill, that the decision was made to move the building, and that a spot close by fascilitated
the placement of the CB at a location providing a symbolically significant angle; that being 19.5 degrees, the sine of which is .333 .
Nicholas Mann, whose phi based geometry does not take into account the notion of a shift for the CB, suggests that the problem of the bend in PA could be
solved by moving the WH further north!! I presume that he means to straighten the line from Georgetown to the CB. This does not take into account the pentagram
that Mann does not recognize.

In the map New Hampshire forms the left side of an isoceles triangle by connecting two of the points of the pentagram. There is no street on the right side
but if we run a line through the points there, they meet the left line at the apex as they cross at 16th Street. In the other direction, the line crosses
the straightened Penn Ave at the blue rectangle apparently confirming the 'ideal' location for the CB. The river front face of the Pentagon appears oriented
to this point as well.

Note how the line from the Pentagon to the blue rectangle parallels NY Ave. Extending New Hmpshire (left side of triangle) points to Arlington, and a line
from there back to the Ellipse through the Lincoln Memorial also parallels NY. The blue circle shows that the blue rectangle is the same distance south of the
WH as Scot Cr is north of it. The orange circle shows the 'new' Jeff Mml position based on the CB placed at the blue rectangle, the same distance south of
the WH as the apex of the triangle is north of it.
Construction done in the 1940's appears to confirm at least the angular intentions of the original plan. In short, I am saying that the angle that Ovason
says the city was designed around was caused by displacing the CB. The predominant diagonal angle in the map is 23 degrees, which is also not 'close enough'
to be called a reflection of the sky triangle.
. . .