1. Lesson 6-4 Example 3 6-4 Example 3 Determine if the triangle is a right triangle using Pythagorean Theorem. 1.Determine which side is the largest.

2. Lesson 6-4 Example 3 6-4 Example 3 2.Substitute the values into a 2 + b 2 = c 2, ensuring that the largest number is c, and solve. a 2 +b 2 =c 2 Use the formula. 4 2 +5 2 =6 2 Substitute the measure of each side. Determine if the triangle is a right triangle using Pythagorean Theorem.

3. Lesson 6-4 Example 3 6-4 Example 3 16+25=36Simplify the exponents. 41  36Add The triangle is not a right triangle. Determine if the triangle is a right triangle using Pythagorean Theorem.