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  • thank you so much. Small question if I may ask. How would I also mark the HCB angle with 90-\theta for maximum clarity? Commented Aug 3, 2021 at 23:40
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    You may, of course: we're here to help. Actually, it is already marked with the smaller \MarkAngleRadius (I copied your posted image with the pstricks tools). But if you think the larger is confusional, you may use colour the markings for this angle and for the corresponding angle CAH, for instance. Or colour the theta angles. To colour the angles, e.g. in red, use\pstMarkAngle[linecolor=red]{…}. Commented Aug 4, 2021 at 9:16
  • thank you so kindly, after reading and learning your code, I copied it into my document and it is giving several errors. It does not seem to be recognizing anything in the pspicture environment. I loaded the two packages in the order you gave, in addition to my other used packages. Could you please advise? Thank you. Commented Aug 4, 2021 at 17:51
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    @kroner: Which compiler did you use? Commented Aug 4, 2021 at 18:13
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    That doesn't tell how you compiled. The simplest is to use xelatex with the --shell-escape switch Commented Aug 4, 2021 at 18:18