Which of the following statements are true with respect to a square?
A square is a plane closed figure bounded by four line segments
The four line segments of square are equal in length
Each angle of square is 90∘
All the above
A square is a plane closed figure bounded by four line segments.
The four line segments of square are equal in length.
Each angle of the figure is 90∘
Four particles each of mass m are kept at the four corners of a square of edge a. Find the moment of inertia of the system about the line perpendicular to the plane of the square and passing through the centre of the square