Question

The figure below shows a rectangle ABCD having diagonals AC and DB. ​

Answer 1

Answer:  b) ΔADC ≡ ΔBCD by SAS

Step-by-step explanation:

Step 1: AD = BC                     SIDES are congruent

Step 2: ∠ADC ≡ ∠BCD          ANGLES are congruent

Step 3: DC = DC                    SIDES are congruent

The proof is using Side-Angle-Side (SAS)

Look at the angles in step 2.  These are the triangles you are proving congruency for: ΔADC ≡ ΔBCD