Question

Look at triangle PQR.

Which other segment is certain to pass through O?

1.the segment from point O to side PR that meets PR at a right angle

2.the perpendicular bisector of side RQ

3.the segment that divides angle PRQ into two congruent angles

4.the segment that connects point R to the midpoint of side PQ

Answer 1

How so?

Answer 2

sry I think its 4 because it will pass through the midpoint which is O