Object-oriented programming Create a class called Triangle that models triangles using three points (the vertices) for the x's and three points for the y's. The vertices will be of type double. It will have two constructors: one by default and one that creates a triangle from its three vertices. The class will also include a method to calculate the area and another to calculate the perimeter of the triangle. Attributes are of type public.   Write here the class diagram and class code in Java

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