why circles of small of diameter looks like polygon in catia v5?

In my catia v5 software, when i draw arcs or circles of small diameter it looks like polygon. can anyone tell me how to remove this problem?

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This is a visualization problem. Change the following settings, see images.

Answered with a tutorial: https://grabcad.com/tutorials/why-circles-of-small-of-diameter-looks-like-polygon-in-catia-v5

 
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