Explain whether the lengths 2 cm, 3 cm, and 7 cm could be the

side lengths of a right triangle.

The sum of the length of any two sides must be greater than the length of the third side, so the given lengths do not form a right triangle.

The sum of the two sides have to be greater than the last side.

Step-by-step explanation:

You can also use the Pythagorean Theorem to find that the side lengths cannot be part of the triangle.