Answer:
[tex]\overline{CS}\cong\overline{ST}[/tex]
Step-by-step explanation:
The congruence statement for the triangles does not list point (or angle) S, so no claim about segments or angles involving S will be supported by the congruence statement.
The statement
[tex]\Delta BAT\cong\Delta CAT[/tex] tells you ...
[tex]\angle TBA\cong\angle TCA\\\angle BAT\cong\angle CAT\\\angle ATB\cong\angle ATC\\\overline{BA}\cong\overline{CA}\\\overline{AT}\cong\overline{AT}\\\overline{TB}\cong\overline{TC}[/tex]
No other claims can be made using CPCTC. The statement among the answer choices that is not true by CPCTC is ...
[tex]\boxed{\overline{CS}\cong\overline{ST}}[/tex]
