Write a program to input three angles of a triangle and check whether a triangle is possible or
not. If possible then check whether it is an acute-angled triangle, right-angled or an obtuse-
angled triangle otherwise, display 'Triangle not possible'.
Sample Input: Enter three angles: 40, 50, 90
Sample Output: Right=angled Triangle
Answers
import java.util.Scanner;
public class Triangle
{
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
System.out.print("Enter first angle: ");
int a1 = in.nextInt();
System.out.print("Enter second angle: ");
int a2 = in.nextInt();
System.out.print("Enter third angle: ");
int a3 = in.nextInt();
int angleSum = a1 + a2 + a3;
if (angleSum == 180 && a1 > 0 && a2 > 0 && a3 > 0)
{
if (a1 < 90 && a2 < 90 && a3 < 90)
{
System.out.println("Acute-angled Triangle");
}
else if (a1 == 90 || a2 == 90 || a3 == 90)
{
System.out.println("Right-angled Triangle");
}
else
{
System.out.println("Obtuse-angled Triangle");
}
}
else
{
System.out.println("Triangle not possible");
}
}
}
Answer:
Easiest way to do it
