Add constructor for Triangle class. Triangle constructor implementation requires to add a default constructor for the Point3D class because we initialize the vertices in the body of the constructor instead of initialize them in the initialize list of the constructor in which way the default constructor will be called.
Add constructor for Triangle class.
Triangle constructor implementation requires to add a default constructor for the
Point3D class because we initialize the vertices in the body of the
constructor instead of initialize them in the initialize list of the
constructor in which way the default constructor will be called.

dimitaruzunov/oop-practicum-2015-16