Question Analysis
The main focus is to correctly identify the altitude among the given line - segments in the triangle by applying the definition of an altitude and analyzing the visual cues.
Key Concept Explanation
An altitude of a triangle is a line segment drawn from a vertex of the triangle perpendicular to the opposite side (or the line containing the opposite side).
Step - by - Step Solution
1. Analyze HI:
HI is a perpendicular bisector as it is perpendicular to OP and I is the mid - point of OP. It does not meet the criteria of an altitude as it does not start from a vertex to be perpendicular to the opposite side.
2. Analyze RI:
RI is a median since I is the mid - point of OP. It is not an altitude as it is not perpendicular to the opposite side from R.
3. Analyze OQ:
OQ is an angle bisector as indicated by the arc marks. It is not an altitude as it is not perpendicular to an opposite side from O.
4. Analyze PG:
PG has a right - angl...