If a polygon has 189 diagonals how many sides does the polygon have ?

Give all possible names for each angle shown.calculation tip: in angle abc, b is the vertex.

The vertex of this parabola is at (-2, 5). which of the following could be it’s equation? a. y=3(x+2)^2-5 b. y=3(x-2)^2-5 c. y=3(x+2)^2+5 d. y=3(x-2)^2+5

With #! i’ve tried to figure it out but i can’t.