Question

which angles are vertical angles? ∠fgd and ∠cdb ∠fgd and ∠edb ∠fgd and ∠hgi ∠fgd and ∠cdg

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 given angles

In the figure, lines $CE$ and $FH$ intersect at point $G$. $\angle FGD$ and $\angle HGI$ are opposite each other at the intersection of these two lines.

Answer:

$\angle FGD$ and $\angle HGI$