Triangles Test ...

To prove that $$\Delta DEF$$ and $$\Delta ABC$$ are congruent by SAS, what additional information is needed?

In the figure, $$\angle BCD = \angle ADC$$ and $$\angle ACB = \angle BDA$$.

In a quadrilateral $$ACBD, AC = AD$$ and $$AB$$ bisect $$\angle A$$,  then:

Consider isosceles triangle $$ABC$$, in which $$\angle ABC=\angle ACB$$ ,then which of the two sides are similar?

Consider isosceles triangle $$ABC$$, in which $$\angle ABC=\angle ACB$$ , $$AB=2BC$$ and $$AB=8cm$$ . What is the perimeter of the $$\triangle ABC$$?

Which congruence criteria can be used to state that $$\triangle$$XOY $$\cong$$ $$\triangle$$POQ?

In Fig if $$\angle C >\angle A,\angle D> \angle E$$ then 

In the given figure, which of the following is correct?

In given figure, 
CF and AE are equal perpendiculars on BD, BF = FE = ED.
$$\angle$$BAE = ______.

In given figure $$\triangle PQR \cong \triangle XYZ$$ by _______ congruency rule.