The information is no complete yet. The additional fact that is needed to prove that both triangles are congruent by SAS is: AD ≅ CD.
How to Apply the Side-Angle-Side (SAS)?
The Side-Angle-Side (SAS) is a triangle congruence theorem that is used to prove that two triangles are congruent to each other if they have two pairs of corresponding congruent sides and a pair of included congruent angles.
The diagram given gives us the following information:
A pair of congruent sides - BD ≅ BD
A pair of congruent angles - <ADB ≅ CDB.
Thus, the information is no complete yet. The additional fact that is needed to prove that both triangles are congruent by SAS is: AD ≅ CD.
Learn more about the SAS on:
https://brainly.com/question/14252518
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