What constraint is used to connect two points together in Autodesk Inventor?

The coincident constraint is used to connect two points together in Autodesk Inventor because it effectively aligns two points so that they occupy the same location in a sketch. When applied, this constraint locks the points together, ensuring they move as a single entity if either point is manipulated later. This is essential in various design scenarios where precise alignment is crucial for the integrity of the assembly or part being designed.

In contrast, the collinear constraint is used to ensure that two lines are aligned along the same direction, which does not directly connect two discrete points. The angular constraint is focused on defining the angle between two lines, which again does not apply to connecting points. Lastly, the tangent constraint is responsible for making a line tangent to a circle or arc, which is a different type of relationship altogether. Thus, the coincident constraint specifically addresses the requirement of joining two distinct points in a cohesive manner.