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# Triangle Project Code.
# Triangle analyzes the lengths of the sides of a triangle
# (represented by a, b and c) and returns the type of triangle.
#
# It returns:
# :equilateral if all sides are equal
# :isosceles if exactly 2 sides are equal
# :scalene if no sides are equal
#
# The tests for this method can be found in
# about_triangle_project.rb
# and
# about_triangle_project_2.rb
#
def triangle(a, b, c)
if (a <= 0) || (b <= 0) || (c <= 0)
raise TriangleError, "A Triangle Cant be formed if atleast one of its sides is less than or equal to zero"
else
if (a + b <= c) || (c + a <= b) || (b + c <= a)
raise TriangleError, "Sum of two sides of a triangle should be greater than third side"
end
end
if (a == b) && (b == c)
:equilateral
else
if (a == b) || (b == c) || (c == a)
:isosceles
else
:scalene
end
end
end
# Error class used in part 2. No need to change this code.
class TriangleError < StandardError
end
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