2. If m 26 = 128°, calculate m25, m_1, and m23.
+
5 6
113
42
7 8

Answer:
m∠5= 52°
m∠1= 128°
m∠3= 52°
Step-by-step explanation:
Please see the attached picture for the full solution.
Alternatively,
m∠3= m∠5 (vert. opp. ∠s)
m∠3= 52°