Z would mean 0 considering they would both be the last
You need to know more information, not just the length of the hypotenuse.
If you know the length of one leg use Pythagoras theorem to find the other.
If you know the value of one other angle use trigononemtry
I think it is acute because below 90 is acute above 90 is obtuse and exactly 90 is right
The Answer Is (C). "The vertex is at (2, 8) and the axis of symmetry is x = 2."