Write a program that prompts the user to enter three points (x1, y1), (x2, y2), (x3, y3) of a triangle and displays its area. The formula for computing the area of a triangle is

(Geometry: area of a triangle) Write a program that prompts the user to enter three 

points (x1, y1), (x2, y2), (x3, y3) of a triangle and displays its area. The formula 

for computing the area of a triangle is

s = (side1 + side2 + side3)/2;

area = 2√s(s - side1)(s - side2)(s - side3)

#Beginner

In gcc c++ compiler using namespace std;

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#include<iostream>

#include<cmath>

using namespace std;

int main()

{

float x1,y1,x2,y2,x3,y3;

cout<<"Enter three point of triangle:"<<endl;

cout<<"point1 x1 and y1 :";

cin>>x1>>y1;

cout<<"point2 x2 and y2 :";

cin>>x2>>y2;

cout<<"point3 x3 and y3 :";

cin>>x3>>y3;

float side1=sqrt(pow(x2-x1,2)+pow(y2-y1,2));

float side2=sqrt(pow(x3-x2,2)+pow(y3-y2,2));

float side3=sqrt(pow(x1-x3,2)+pow(y1-y3,2));

float s=(side1+side2+side3)/2;

float area=sqrt(s*(s-side1)*(s-side2)*(s-side3));

cout<<"The area of the triagle is :"<<area;

return 0;

}

copy

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Output

Enter three point of triangle:

point1 x1 and y1 :2 4

point2 x2 and y2 :2 0

point3 x3 and y3 :5 0

The area of the triagle is :6

[Program finished]

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Need of Programmer

Need of Programmer