Answer is:
two elements that permit relative motion
Explanation:
The two links or elements of a machine, when in contact with each other, are said to form a pair. If the relative motion between them is completely or successfully constrained (i.e. in a definite direction), the pair is known as kinematic pair.
![Kinematic pairs are those which have](https://mcqfinder.in/uploads/images/objective-questions/mechanical-set-3-theory-of-machines/mechanical-set-3-theory-of-machines-id-276-e.jpg)
Answer is:
parallelogram
Answer is: