Answer:
Step-by-step explanation:
3). Definition of midpoint
4). Midpoint theorem ( ≅ parts are = )
7). Division Property of Equality.
8). QR = 5 + 2 = 7 Substitution x by equal value
9). PQ = 4(2) - 1 = 7 Substitution x by equal value
10). Segment addition postulate
11). Substitution
