Answer:
[tex]\text{a. Congruent}\\\text{b. Not congruent}\\\text{c. Congruent}[/tex]
Explanation:
[tex]\text{a. These triangles are isosceles triangle, so both triangles have two equal}\\\text{base angles 64}^\text{o}\text{ and }64^\text{o}. \text{With this information, these triangles can be proved}\\\text{congruent by A.A.S. postulate.}[/tex]
[tex]\text{b. There is no enough information that can verify the triangles to be congruent.}[/tex]
[tex]\text{c. The third angle in the first triangle will be 59}^\text{o}\text{ and the third angle in the}\\\text{second triangle will be }83^\text{o}.\text{ This makes the triangles congruent eventually by}\\\text{A.A.S. postulate.}[/tex]
