Problem N 5
In this problem we have two congruent sides and a congruent angle
so
but the congruent angle is not the angle between the two congruent sides
therefore
The triangles are not congruent
Problem N 6
we have two congruent sides and the third side is common
therefore
the triangles are congruent by SSS
statement
∆FDE=∆FCE
Problem N 7
we have two congruent sides and the angle between the two congruent sides is congruent
therefore
The triangles are congruent by SAS
so
∆CDE=∆CBA
Problem N 8
we have two congruent sides and the angle between the two congruent sides is congruent
therefore
The triangles are congruent by SAS
statement
∆AEM=∆ADJ