A Isosceles Is also a Triangle RED
A Isosceles Is also a Triangle GREEN
Calculate area of Triangle Isosceles RED
 All sides have to be positive and no words GREEN
A Isosceles calculate perimeter Isosceles RED
A Isosceles calculate perimeter Isosceles GREEN
A Isosceles calculate perimeter Isosceles GREEN
Finish class Isosceles
Finish class Isosceles
Triangles defined