Question

 In ∆DEF the angle included between sides DE and EF​

Answer 1

Step-by-step explanation:

The angle is included between the sides DE and DF of triangle DEF is ∠D. Without drawing the diagram of the triangle we can predict the angle between the given sides DE and DF. In the sides DE and DF we have the common corner as D which both sides so that will be the angle between the sides.