What stays the [b]same[/b] and what [b]changes[/b] when you move[br][list][br][*]the SF slider[br][/*][*]the centre[br][/*][*]the vertices A,B and C?[br][/*][/list][br]Are there any points that do not move under this transformation?

[color=#0a971e]Created by N.Trubridge[/color]