Name each angle four ways.

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

Math question.. plz me .. best answer all

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i