Can't answer 1-6 cause I have no idea what you need
7) A triangle with two congruent sides is isosceles.
8) [tex]\overline{AC}[/tex] and [tex]\overline{BC}[/tex]
9) [tex]\angle C[/tex]
10) [tex]\overline{AB}[/tex]
11) [tex]\angle A, \angle B[/tex]
12) isosceles triangle
