The Pythagorean Theorem
The Right Triangle A right triangle is a triangle that contains one right angle. A right angle is 90 o Right Angle
Parts of a Right Triangle Leg Hypotenuse
The Pythagorean Theorem a 2 + b 2 = c 2 a b c
Example 1 Find the length of the hypotenuse. 3 4 c
Example 2 Find the length of the hypotenuse. 6 8 c
Example 3 Find the length of the hypotenuse c
Example 4 Find the length of the unknown side b
Example 5 Find the length of the unknown side a
Example 7 Find the length of the unknown side b
Pythagorean Triple All of the side lengths of the triangles we have looked at form Pythagorean Triples. If the side lengths of a right triangle are all whole numbers, they are called Pythagorean Triples.
Pythagorean Triples List the Pythagorean Triples we have discussed.