Keeping pattern in knitted triangle?

[LinneaJo]

I know, you're absolutely right! I just find it so sad knitting wrong... It makes me cry, honestly.
But I feel a bit more secure now and I will go ahead and test it.

Short question: Which decrease will match my yarn over in tilting and such? There is a couple to choose from:
http://www.knittinghelp.com/videos/decreases