in the figure shown, A is the midpoint is SM

Answer:
The correct options are 1 and 2.
Step-by-step explanation:
Given information: A is the midpoint of SM.
It means point A divides the line segment SM in 2 equal parts.
[tex]\overline {SA}=\overline{AM}[/tex]
From the given figure it is clear that the point S,A and M are collinear because they lie on a straight line. Using addition of segments we get
[tex]\overline {SA}+\overline{AM}=\overline{SM}[/tex]
Since [tex]\overline {SA}=\overline{AM}[/tex] and [tex]\overline {SA}+\overline{AM}=\overline{SM}[/tex] are true. Therefore the correct options are 1 and 2.