According to the picture:
For the first statement
[tex]AB\cong CD[/tex]
The reason is: Given.
This is because it is given in the information to solve the problem.
The second statement must be:
[tex]BC\cong DA[/tex]
And the reason is also: Given.
For the third statement:
[tex]AC\cong AC[/tex]
The reason is the Reflexive property.
The fourth statement must be:
[tex]\Delta ABC=\Delta ADC[/tex]
The reason is Side Side Side congruence postulate.
The fifth statement must be:
[tex]\measuredangle ABC=\measuredangle CDA[/tex]
The reason is congruent triangles definition.
