Final answer:
The Mesiofacial and Distolingual cusps form a transverse ridge on most maxillary molars.
Step-by-step explanation:
The two cusps that have a triangular ridge that make up or join to form a transverse ridge on most maxillary molars are the Mesiofacial and Distolingual cusps. These two cusps are located on opposite sides of the molar and when they come together, they create a transverse ridge that helps in grinding and crushing food.