Thank you for the question, Cynthia.
In short, yes.
If you're wondering whether the capital passage is a tool available for use in a UEB Math/Science transcription, then please consider that UEB technical is an extension of UEB in general (rather than being a separate code). This means all UEB indicators may be used in technical material rendered in UEB.
To underscore this, use of the capitals indicator is mentioned and demonstrated in the chemistry portion of the current UEB technical document (Guidelines for Technical Material 16.2).
If you're wondering whether the braille would be accurate with the capital passage used, then the answer is also "yes." That is, the print you have is "'the edges of this polygon are segments' AB-with-bar-over, BC-with-bar-over, CD-with-bar-over, DE-with-bar-over, and EA-with-bar-over." and it would be accurate to braille this as (disregard line breaks):
! $ges ( ? polygon >e seg;ts ;;;,,,<ab>:1 <bc>:1 <cd>:1 <de>:1,';' & ;;<,,ea>:4
However, I suspect that the following transcription would be more intuitive to a lot of braille users. (disregard line breaks)
! $ges ( ? polygon >e seg;ts ;;;<,,ab>:1 <,,bc>:1 <,,cd>:1 <,,de>:1;' & ;;<,,ea>:4
What do you think? Does this help?