Triangle Solver and realistic drawing of a solved triangle

[Angus]

I share your thoughts. In Europe angles are almost entirely labeled in greek letters.
It doesn't make much of a difference, yes. But if you expect confusion when using the solver changing the naming of the angles is a small change compared to an animated drawing.
If sides and angles are labled without ambiguity I would expect every student to be able to deal with different geometries... I see no need nor sense in adding additional comfort there.

edit: Think of astronomical dimensions - you could easily see a line if thinking of the triangle scaled correctly e.g.