04:53
Discovering Geometry an Investigative Approach
Copy the figures onto your paper and mark them with the given information. Answer the question about segment or angle congruence. If your answer is yes, write a paragraph proof explaining why. Remember to use your reasoning strategies, especially apply previous conjectures and add an auxiliary line. If there is not enough information to prove congruence, write “cannot be determined,” otherwise state which congruence shortcut you used. FIGURE CAN'T COPY.
$$\begin{array}{l}
\angle A \cong \angle C \\
\angle A B D \cong \angle C B D \\
\text { Is } \overline{A B} \cong \overline{C B} ?
\end{array}$$