Question

In the diagram, figure PMNO is the image of figure ABCD.

Answer 1

angle B is angle M
Look at the position.
Or the name of figures
(PMNO) and (ABCD) ,M and B are the second.

Answer 2

`ABCD \rightarrow PMNO \Rightarrow \\ \angle{A} \cong \angle{P} \\ \angle{B} \cong \angle{M} \\ \angle{C} \cong \angle{N} \\ \angle{D} \cong \angle{O}`

Therefore,
`\angle{B} \cong \angle{M}`