Triangle ABC has side lengths of 4 units, 7 units, and 5 units. Use the Converse of the Pythagorean Theorem to prove that ABC is not a right triangle. Write numbers 1-4 to order the steps.

16 + 25 = 49

a2 + b2 = c2

41 ≠
≠
49

42 + 52 = 72

Therefore, triangle ABC is not a right triangle.