Answer:To complete each part based on the given figure:
(a) Name the vertex of 1:
The vertex of angle 1 is M.
(b) Name the sides of NMQ and ar:
In triangle NMQ, the sides are NM, MQ, and the third side is NQ.
The corresponding sides in ar are ar, QR, and the third side is aQ.
(c) Write two other names for angle 2:
Angle 2 can also be referred to as ∠QMR or ∠RQM, depending on the orientation of the triangle.
Step-by-step explanation: