Short Answer

Note: Your teacher will grade your response to questions 13–15 to ensure you receive proper credit for your answer.
For a triangle, list the respective names of the points of concurrency of

perpendicular bisectors of the sides
bisectors of the angles
medians
lines containing the altitudes

1 answer

The respective names of the points of concurrency for a triangle are:

Perpendicular bisectors of the sides - circumcenter
Bisectors of the angles - incenter
Medians - centroid
Lines containing the altitudes - orthocenter