Write a class called Triangle that can be used to represent a triangle. It should include the following methods that return boolean values indicating if the particular property holds:
- is Right(a right triangle)
- is Scalene(no two sides are the same length)
- is Isosceles(exactly two sides are the same length)
- is Equilateral(all three sides are the same length)
Write a simple tester program that creates a few triangles and asks them about their type.