Why is the if-statement not working in my java code?

I just started a java class at uni, and am trying to solve a practise exercise where the code reads two angles of a triangle and outputs the third angle.

I wrote an if-statement to make sure the sum of the three angles would never be larger than 180, but the terminal seems to ignore the "else" part of the if-statement completely.

What am I missing?

Originally, I had written "if (triangle == 180) ...", then "if (triangle != 180) .." etc, switching things around. But the "else" is still ignored. In the below code snippet I added a separate int for the triangle, and another one for the sum of all angles.

This is the code I'm working with now:

import java.util.Scanner;

public class Ex2 {
  public static void main(String[] args) {
    Scanner wheatley = new Scanner(System.in);

    System.out.println("Write two angles of a triangle.");

    int firstAngle = wheatley.nextInt();
    wheatley.nextLine();
    int secondAngle = wheatley.nextInt();
    wheatley.nextLine();

    int thirdAngle = 180 - firstAngle - secondAngle;

    int angleSum = firstAngle + secondAngle + thirdAngle;

    int triangle = 180;

    if (angleSum == triangle) {
      System.out.println("The third angle is " + thirdAngle + " degrees.");
    } else {
      System.out.println("This is not a triangle.");
    }
  }
}

After compiling the code and inputting the two angles I get the following result:

"Write two angles of a triangle. 200 200 The third angle is -220 degrees."

I was expecting:

"Write two angles of a triangle. 200 200 This is not a triangle."