Question

A. It is not possible to determine if the triangles are congruent

B. ∆ABD ≅ ∆CBD by the SAS Postulate
C. ∆ABD ≅ ∆CBD by the SSS Postulate

Answer 1

Answer: Triangles ABD and CBD are congruent by the SSS Congruence Postulate.

Hope it helps :)

Answer 2

C. ∆ABD ≅ ∆CBD by the SSS Postulate

Explanation:

We can prove that ∆ABD and ∆CBD congruent by the SSS Postulate.

The SSS postulate states that of three sides in one triangle are congruent to three corresponding sides in another, therefore, the two triangles are congruent.

From the diagram shown,

AB ≅ CB,

AD ≅ CD

BD = BD

We have three sides in ∆ABD that are congruent to three corresponding sides in ∆CBD.

Therefore, ∆ABD ≅ ∆CBD by the SSS Postulate