No, that is a nitpick, I'm afraid. If you think otherwise may I invite you to draw a square with sides of length zero.
Hint: it doesn't exist.
Second hint: it is trivial to demonstrate that it doesn't exist. Consider the triangle. Can you define it as a quadrilateral with one side of length zero? What is the angle at the null vertex? Proceed from there.
Finally, the problem states "another whole number". Zero is not different from zero. As with any exam, you should read the question carefully first.
Hint: it doesn't exist.
Second hint: it is trivial to demonstrate that it doesn't exist. Consider the triangle. Can you define it as a quadrilateral with one side of length zero? What is the angle at the null vertex? Proceed from there.
Finally, the problem states "another whole number". Zero is not different from zero. As with any exam, you should read the question carefully first.