How Do I Create Circular Text In Keynote?

I have O.S.10.13.6 and Keynote 8.3. Picture a circle. I want my text to go around the circumstance of that circle. I would like to know how to do that both inside and outside of the circumstance. There seem to be a couple of ways to do it in PowerPoint but I cannot figure out even one way to achieve it in Keynote. I know how to edit shapes and I know that shapes can also functions as text boxes. I would be very grateful if you could give specific steps to follows.
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George Coder