Which one of the sides is this?

I don’t know if these are options for the drop box thing but SAS (side angle side), makes the triangles congruent

For quadratics written in the form  a(x-h)² + k:
- k is the vertex (min/max)
- it is a minimum if a is positive.
- it is a maximum if a is negative.

for our first equation,  f(x) = (x+1)² - 2, the vertex is a  minimum.
(nothing is being multiplied outside our parentheses so assumedly a = 1)
for our second,  g(x) = -(x-2)² + 1, the vertex is a  maximum.
(the negative sign + the above reasoning means a = -1 here)