Here's a little fun with ellipses. They are so hard to get the size and aspect right. These rings are all the same size and aspect (shape). The other distances have been temporarily turned off. If you want to work with the chart, click "make mine" in the upper right corner. To adjust the rings, right click on the object, "format" and select or deselect (or even change) the ratios. Clicking "make it mine" allows you to do whatever you want with the chart and experiment.
Also check out EURUSD
for the same ellipse formation used many times over. I never checked this to see if their centers all run on trendlines
together but they might.