Radio button help for a rookie

I’m a 70 year old man trying to keep my mind young. I seek to understand how the radio button moves the information forward. How do I tell the definition which selection has been made?

When the radio button is selected for “oval” I want to show only the parameters ‘width and length’ AND the ‘polygon’ component to not run. Likewise when “Poly” is selected the reverse becomes true AND the ‘ellipse’ component should not run, and the relevant parameters change. If the user were to switch back and forth during a session do things need to revert back to a default state?
radio (20.1 KB)

I got it figured out for those who might need to know.
radio (27.5 KB)

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