Answer:
Step-by-step explanation:
Use the pythagorean theorem
plug in and solve
if you need to solve for the sides
3x = 3(4.7434) = 14.2302
perp. -4
y + 6 = -4(x + 2)
y + 6 = -4x - 8
y = -4x - 14
60 degrees, because it's an equilateral triangle, as you can tell because the sides are all the same length.