Rectangle In Peace RIP

You are given N lines on the axes of a coordinate. The lines are represented by 2 endpoints namely $(x1,y1)$ and $(x2,y2)$. Now your task is to check whether $all$ points combine to form a rectangle of 4 sides. All the lines given are either parallel to the x-axis or y-axis. Remember a valid rectangle is a rectangle with all the lines falling to its 4 sides and there is no gap or blank space in an