An acute angle has a smaller measure than an obtuse angle
Ya what the person above me said
check the picture below.
recall that in a rhombus, both diagonals bisect each other, namely cut each other in equal halves and at right-angles, so we end up with 4 right-triangles.
now, the sides in a rhombus are all equal, thus the perimeter is 13+13+13+13.
Extraneous root since dividing by zero is undefined
The answer would be
vertex = (1,-9)
y- intercept = (0,8)
axis of symmetry= x = 1
i hope this helped :)