2. Get a referral for physiotherapy. If your back pain is recurring (chronic) and caused by weak spinal muscles, poor posture or degenerative conditions such as osteoarthritis, then you need to consider some form of rehabilitation.. Get a referral for physiotherapy. If your back pain is recurring (chronic) and caused by weak spinal muscles, poor posture or degenerative conditions such as osteoarthritis, then you need to consider some form of rehabilitation.
The exterior angle of a triangle is equal to 1  . the value of its adjacent angle. 2  the sum of its opposite interior angles.  the product of its opposite interior angles.
What it is: The exterior angle is defined as the angle between one side of a regular polygon and an imaginary line extended from a side adjacent to the first side.