(a) no (b) yes
Work Step by Step
The angle bisectors of a rectangle are not concurrent but the perpendicular bisectors of the sides are. So rectangles have a circumcenter but not an incenter.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.