A point is in the XZ-plane. What can you say about its y-co-ordinate ?

A point is in the XZ-plane. What can you say about its y-coordinate?

If the side of the square is halved. What can you say about its area?

A point is on x-axis. What are its y-co-ordinate and z-co-ordinate ?

If one of the angles formed by two intersecting lines is a right angle, what can you say about the other three angles? Give reasonf for your answer.

The electric potential is Constant in a region. What can you say about electric field threre?

The electric potential is constant in a region. What can you say about electric field there?