java三角形图形计算器怎么判断边？求教大神

Question

package edu.jmi.shape;
import java.util.Scanner;

public class SanJiaoXing {
float length;
float high;

/**
 * @param args
 */




float zhouChang(){
    float zhou = 3*length;
    return zhou;
}
float mianJi(){
    float mian = (length*high)/2;
    return mian;

}
public static void main(String[] args) {
    // TODO Auto-generated method stub
    SanJiaoXing san = new SanJiaoXing();
    san.length = 6;
    san.high = 5;
    System.out.println("请输入三角形的长和高：");
    Scanner sc = new Scanner(System.in);
    san.length = sc.nextFloat();
    san.high = sc.nextFloat();//从键盘导入

    float zc = san.zhouChang();//通过对象调用周长计算面积
    System.out.println("周长"+zc);
    float mj = san.mianJi();
    System.out.println("面积"+mj);

}

}

Answer 1

三角形的长是什么东西？只有三边长，或者周长，或者底边长，三角形不是长方形，哪里来的长。