Question

A student made the following chart to prove that AB2 + BC2 = AC2.

What is the flaw in the student’s proof?

Answer 1

Justification 4 should be “AB ÷ AD = AB ÷ AC because triangle ABC is similar to triangle ABD”.

Justification 1 should be “Angle ABC = Angle BDC and Angle BCA = Angle BCD”.

Justification 2 should be “BC ÷ DC = BC ÷ AC because triangle ABC is similar to triangle BDC”.

Justification 3 should be “Angle ABC = Angle BAD and Angle BAC = Angle ABD”.

these are the answer choices if that helps...