triangle.java

矩形类的说明,包含所有的属性

package lab3.problem2;

public class Triangle extends Shape {
    double x,y,z;
	public Triangle(double s1, double s2, double s3) {
		x=s1; 
		y=s2;
		z=s3;
	}

	public double getArea() {
		double l=(x+y+z)/2;
		double t=l*(l-x)*(l-y)*(l-z);
		double Area=Math.sqrt(t);
		return Area;
	}

	public double getPerimeter() {
		double d=x+y+z;
		return d;
	}
	
}