Richard Harrison wrote:
. . .
Radiation from any loop depends on its enclosed area. This is intuitive
from transmission line behavior. It`s often observed that the wider the
spacing between the wires, the more the line radiates. As we increase
the area of a loop, the distance between the wires increases. Like the
transmission line, iits radiation increases.
. . .

Ok, let's start with a triangular loop with negligible loss. We feed 100
watts to it. Since it has negligible loss, 100 watts must be radiated.

You've said that the radiation must increase as we round out the
triangle. So how much more radiation can we expect from a round loop fed
with 100 watts? 120 watts? 150?

Roy Lewallen, W7EL