Given ABCD is a rectangle
Prove ABD has congruent diagonals

Identify the steps that complete you the proof.

6. opposite sides of a parallelogram are congruent

Don't we already know the opposite sides of a rectangle are congruent without six steps?

8. SAS  Side Angle Side Theorem

They picked the wrong triangles, they should show

BAD is congruent to ABC

9. They're probably looking for CPCTC, corresponding parts of congruent triangles are congruent.  But AC isn't in either of the triangles they showed congruent.

My professional opinion is this question sucks.

Club Symbol = parallelogram side theorem

Diamond Symbol = SAS

Spade Symbol = CPCTC

Step-by-step explanation:

Edge2020 ^_^

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.