Question

draw atleast three objects with light and shade from a circle, square and triangle each

Answer 1

you can use oil pastels because the colour should be looking nice

Answer 2

Light and shadows are used to visually describe objects. To draw such an object a person has to think like an artist, for instance, he has to design a frame first in his mind from all the perspective of the thing that he is going to make. Artists practice values to transmute the light and shadows.