triangle

triangle.rb

# You need to write the triangle method
class TriangleError < RuntimeError
end

def triangle(x,y,z)
 raise TriangleError if has_zero_side? x,y,z
 raise TriangleError if has_negitive_side? x,y,z
 raise TriangleError if side_too_long? x,y,z
 return :equilateral if equilateral? x,y,z
 return :isosceles if isoceles? x,y,z
 :scalene
end

triangle.should have_zero_sides

def has_zero_side?(x,y,z)
   x == 0 || y == 0 || z == 0
end

def has_negitive_side(x,y,z)
    x < 0 || y < 0 || z < 0
end

def side_to_long(x,y,z)
   x+y <= z || y+z <= x || z+x <= y
end

def is_equilateral(x,y,z)
   x == y && y == z && z == x
end

def is_isoceles(x,y,z)
  x == y || y == z || z == x
end