1. 아래가 돌아 가도록 Triangle 클래스를 만드시오.

Triangle triangle2 = new Triangle();
triangle2.initTriangle(10, 1000);

System.out.println("삼각형의 넙이는" + triangle2.getArea());

2.아래가 실행되도록 Grade를 완성하시오.

Grade grade = new Grade();

	System.out.println("값확인" + grade.eng + grade.math + grade.kor );
	grade.initGrade(90, 70, 60);
	
	System.out.println(grade.getAvg());
	System.out.println(grade.getGrade());

3. 아래가 실행되도록 Rectangle를 완성하시오.

	Triangle triangle = new Triangle();
	triangle.initTriangle(10, 5);
	
	Triangle triangle2 = new Triangle();
	triangle2.initTriangle(10, 5);
	
	triangle.compare(triangle2); //같은 삼각형입니다.
	triangle2.initTriangle(10, 10);
	triangle.compare(triangle2); //다른 삼각형 입니다.