One common misunderstanding about the Pythagorean Theorem is:

• Only for Right Triangles: Some people believe it only works for right triangles. However, it's important for understanding many different shapes too.

Another misunderstanding is:

• Misidentifying Sides: Many students mix up which side is called the hypotenuse. The hypotenuse is always the longest side, and it sits opposite the right angle.

Lastly:

• Only About Area: Some folks think it's only used for finding areas of shapes. But really, it's about how the lengths of the sides are related to each other.