Pada means foot and hasta means hand. We're stepping the feet onto the hands in this forward fold which is a great stretch for the wrists after our sun salutations.
Triangle or Utthita Trikonasana helps to stretch the side body, legs, shoulders and chest. This posture is also great for cultivating strength in the arms and legs, balance and stability.
Twisted Triangle or Parivrtta Trikonasana can be very challenging. It strengthens and stretches the legs. The spine and hips also stretch. It's a twist which is great for digestion. It can relive mild back pain when practiced correctly.
Extended Side Angle or Utthita Parsvakonasana is an invigorating pose that strengthens the legs, abdominals and arms. This posture also creates stability and stretches the hips and groins.