Zoe is using the figure shown below to prove Pythagorean Theorem using triangle similarity: In the given triangle ABC, angle A is 90° and segment AD is perpendicular to segment BC.
A
С
D
B
Which of these could be a step to prove that BC2 = AB2 + AC2? (6 points)
By distribution, ACplus ABP = BC multiplied by the quantity DC plus AB.
By distribution, Ac? plus AD? - BC multiplied by the quantity DC plus BD.
By distribution, AC? plus AD- BC multiplied by the quantity DC plus AB.
By distribution, Ac? plus AB2-BC multiplied by the quantity DC plus BD.