When compared to steak-cut chips (UK), fries (US & Global), roasted potatoes or crinkle-cut chips (UK), a wedge could be defined as having distinct corners when viewed as a cross-section perpendicular to the normal- a centreline running along the length of the cut potato form. This can be viewed as a triangular section, should there be 4 corners it would commonly be referred to as just a chip/fries.
In Germany, they are known as Kartoffelspalten ('potato-clefts'), wilde Kartoffeln ('wild potatoes'), or Westernkartoffeln ('Western potatoes').
In France, they are called potatoes (pronounced as it is in English).
In Sweden, they are called klyftpotatis ('wedge-potatoes').
In Russia, they are known as картофель по-деревенски ('village-style potato') or картофель по-домашнему ('homestyle potato').
In Turkey, they are known as elma dilim patates ('apple slice potatoes').
In Australia, potato wedges are a common bar food, that are almost always served with sour cream and sweet chilli sauce. They are usually seasoned with a variety of spices, commonly paprika, salt and pepper.
In Maryland, they are known as Western fries.
In Yorùbáland of Nigeria, they are known as Dùndún.