Ahhh this might sound really dumb but are the opposite angles of an isosceles trapezoid the angles diagonal from each other? or across from each other?

Step-by-step explanation:

I think across from each other is more direct. You could say two angles that are on opposite ends of a diagonal. That is probably clearest of all, now that I think of it.

if i put something wrong your not gonna like it so rather not say nothing.