A squared plus b squared equals c squared
May 13, 2019 · First of all, if you create a square by multiplying two equal integers by each other, then the product is a perfect square. So, $1 * 1$ is a perfect square. So is $10 * 10$ and $1,000 * 1,000$. You can also tell if a number is a perfect square by finding its square roots. Finding the square root is the inverse (opposite) of squaring a number.