Question

name the marked angle in 2 different ways.

Explanation:

Step1: Use vertex - based naming

An angle can be named by its vertex. Here the vertex is D, so one way to name the marked angle is $\angle D$.

Step2: Use three - point naming

When naming an angle using three points, the vertex must be the middle point. For the marked angle with rays DG and DF, another way to name it is $\angle GDF$.

Answer:

$\angle D$, $\angle GDF$