Question

1. if pq = 9 and qr = 28, find pr.

Explanation:

Step1: Identify the relationship

Points P, Q, and R are collinear, and by the segment - addition postulate, if Q is between P and R, then $PR=PQ + QR$.

Step2: Substitute the given values

Given $PQ = 9$ and $QR=28$, we substitute into the formula: $PR=9 + 28$.

Step3: Calculate the result

$PR=37$.

Answer:

37