Question

df and gi are parallel lines. which angles are vertical angles? ∠fec and ∠feh, ∠fec and ∠ghe, ∠fec and ∠deh, ∠fec and ∠ihj

Explanation:

Step1: Recall vertical - angle definition

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

Step2: Analyze the intersection at point E

Lines DF and JC intersect at point E. The pairs of vertical angles formed at this intersection are ∠FEC and ∠DEH, and also ∠FED and ∠HEC.

Answer:

∠FEC and ∠DEH