Answer: SSS congruence postulate
Step-by-step explanation:
In the given picture , we have two triangles [tex]\triangle{QDJ}\text{ and}\triangle{MCW}[/tex].
In [tex]\triangle{QDJ}\text{ and}\triangle{MCW}[/tex], we have
[tex]\overline{QJ}\cong\overline{MW}\\\\\overline{DJ}\cong\overline{CW}\\\\\overline{QD}\cong\overline{MC}[/tex]
Then by SSS congruence postulate , we have
[tex]\triangle{QDJ}\cong\triangle{MCW}[/tex]
SSS congruence postulate says that any two triangles are congruent if all three sides in first triangle are congruent to the corresponding sides in the second.