Coplanar lines. The lines which lie on the same plane are said to be coplanar lines. In the above figure, we can see that the lines, l, m and n lie on the same plane, hence they are coplanar. Coplanar line segments.
Occupying an area of more than 190 km 2 (73 sq mi), Aleppo is one of the fastest growing cities in the Middle East. According to the new major plan of the city adopted in 2001, it is envisaged to increase the total area of Aleppo up to 420 km 2 (160 sq mi) by the end of 2015.
So rather than try and describe how big an acre of land is by saying it is 43,560 square feet, or roughly 208' x 208' square, or bigger than a bread basket, etc., here are some examples of just how big some common known things and places are so you can picture it better in your mind.