Among the following, the supplementary physical quantities in S.I are

i) Velocity                                 ii) Plane angle              

iii) Volume                                iv) Solid angle

Plan angle, Solid angle are the supplementary quantities.

Plane angle and Solid angel are the supplementary quantities in SI. Supplementary units are those which are not graded as either base or derived . Physical quantities are divided into seven basic and two supplementary categories.