Does the following figure follow RHS congruence for the triangles \(ABD\) and \(BCD\)? If \(∠ABD =\) 55\(°\), find the measure of angle \(∠BDC\).
1. The triangles \(ABD\) and \(BCD\) are congruent when applying .
2. The measure of angle \(∠BDC = ∠\) \(=\) \(°\).