Potato wedges are a variation of french fries. As their name suggests, they are wedges of potatoes, often large and unpeeled, that are either baked or fried. They are sold at diners and fast food restaurants.
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 or Wilde Kartoffeln (wild potatoes).
In Sweden, they are called klyftpotatis (wedge-potatoes).
In Russia, they are known as картофель по-деревенски (potatoes "village style").
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.