Chapter 7 - Section 7.2 - Concurrence of Lines - Exercises - Page 335: 8

A) No B) No

a) It is not necessary to draw the three bisectors as the in-center is also the center of the inscribed circle, so by drawing the inscribed circle, the in-center can be found using a different method. b) The circumcenter is the center of the circumscribed circle, so it is not necessary to draw the perpendicular bisectors to find it.