Question

The three steps to prove triangle ABD is congruent to triangle CDB

Answer 1

Given

`\measuredangle ABD=\measuredangle CDA,AB=DC`

Answer

In triangles ABD and ADB

`\begin{gathered} \measuredangle ABD=\measuredangle CDA, \\ AB=DC \\ BD=BD\text{ (common)} \\ \Delta ABD\cong\Delta CDB \end{gathered}`