Answer:
D
3. Reflexive Property of (Congruence) ≅
4. SSS (Side to Side to Side Congruence rule)
Step-by-step explanation:
3. Any geometric figure compared to itself is congruent to itself so this is why:
[tex]\overline{AC}\cong \overline{CA}\\\angle B\cong \angle B\\(...)[/tex]
4. Since we have a parallelogram, therefore we can say:
[tex]\overline{BC}\cong \overline{DA}\\\\\overline{BA}\cong \overline{DC}\\\\\overline{CA}\cong \overline{AC}\\[/tex]
Both triangles ABC and CDA satisfy the side to side to side congruence, since their 3 sides are congruent.
So, It's D.
P.S.
Notice that the angle measure information is not included in the data above that's why we cannot say it is SAS congruence.
