Verified Answer :

Easy,

the Pythagorean theorem is:

\(a^{2} + b^{2} = c^{2}\)

The a and b, being a value that you HAVE

and

c, being the value you are trying to find.

Example: have 1,2 for a triangle what is the third side?

\(1^{2} + 2^{2} = c^{2}\)

1+4=\(c^{2}\)

5=\(c^{2}\)

Then, just square root to find c.

\(\sqrt{5}\)=c

2.2≈c

Answer:

Pythagorean theorem - theorem that states that the sum of the squares of the two legs is equal to the square of the hypotenuse in a right triangle