Answer:
The answer is angular.
Step-by-step explanation:
The shank in humans, which is the body part between the ankle and the knee joint, is made up of distinct parts such as Tibia, Soleus Muscle, Gastrocnemius Muscle, The Achilles Tendon etc. and during the act of extending the knee in either direction, the shank undergoes an angular motion with the rest of the leg.
I hope this answer helps.