Question

complete each statement to show why △dea ~ △cba. step 1: ∠dea is congruent to ∠cba because they are both ? angles.

Explanation:

In the diagram, $\angle DEA$ has a right - angle symbol, indicating it is a right angle. For $\triangle CBA$ to be similar to $\triangle DEA$, $\angle CBA$ should also be a right angle (since the right - angle is a key angle for triangle similarity in cases like AA (Angle - Angle) similarity criterion). So $\angle DEA$ and $\angle CBA$ are both right angles, which makes them congruent.

Answer:

right