Since these two figures are congruent, we have that they have the same angles.
We can see that there are three angles in triangle RST: 79, 42 y 59. In the other triangle, we see that we have the angles: 42 and 79, and these angles are adjacent to the side with measure 64. On the other hand, 42 and 59 are adjacent to the side which measures 74 yds.
Therefore, the measure of the angle M is equal to 59.
In summary, m
