Seth is using the figure shown below to prove pythagorean theorem using triangle similarity. in the given triangle ABC, angle A is 90 degrees and segment AD is perpendicular to segment BC.

Which of these could be a step to prove that BC2 = AB2 + AC2? (6 points)

By the cross product property, AB2-BC multiplied by BD.

By the cross product property, AC2-BC multiplied by BD.

By the cross product property, AC2 - BC multiplied by AD.

By the cross product property, AB2-BC multiplied by AD.