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Pythagorean Theorem
Using the Pythagorean Theorem to find the hypotenuse

We can use the Pythagorean theorem to find the hypotenuse of a right angled triangle, but only if we know the length measure of the two legs.

Find x
 c2=a2+b2 c2=82+122 c2=64+144 c2=208 $c=\sqrt{208}=4\sqrt{13}$

In a right triangle you know the legs are 28 and 21 units long.

Calculate the hypotenuse length

 Solution: