Take a look at the original Solar Geometry drawing for Mercury, Venus and Earth is as follows:

(Click on picture for enlargement and explanation)

Note how the key points of this geometry coincide with the floor plan of this Hindu temple:

The outer blue circle has a diameter of 2, the diameter of orbit of Mercury.

The inner blue semicircle has a diameter of 1.866025404, the mean radius of orbit of Venus.

Along the vertical red line are successively delineated Venus^0 (Mercury), Venus^.5 (Geometric average, mean radius of orbits of Mercury and Venus), Venus^.75 (Geometric average, times of orbit of Venus and Mercury), and V^1.0 (mean radius of orbit, Venus).

The green line running from bottom center to the upper right corner of the square touching the blue circle is .5*(sqrt 6 + sqrt 2), 1.931851653 (sqrt of diameter of orbit, Venus).

Also encoded within this floor plan is the mean radial distance of orbit of the Earth.