In which condition the resultant of two different vectors can be equal with one of then?

Can the resultant of three coplanar vector be zero ?

Under what condition is the magnitude of the difference of two vectors equal to their resultant ?

Can the magnitude of the resultant of two vectors of equal magnitude be equal to the magnitude of each vector ? Explain.

Write two different vectors having the same direction.

Write two different vectors having the same magnitude.

Find the magnitude and direction of the resultant of two vectors which are perpendicular to each other.