Question

which angles are vertical to each other? ∠bec and ∠ced, ∠dea and ∠ced, ∠aeb and ∠bec, ∠dea and ∠bec

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect. They are opposite each other and are congruent.

Step2: Identify vertical - angle pairs in the figure

In the figure with lines \(AB\) and \(CD\) intersecting at point \(E\), \(\angle DEA\) and \(\angle BEC\) are opposite each other, and \(\angle AEB\) and \(\angle DEC\) are opposite each other.

Answer:

\(\angle DEA\) and \(\angle BEC\)