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.
The loss of Aleppo is a major strategic defeat for the rebels. It was the most densely populated and prosperous region under their control, their most prized possession. They managed local services and their half of the city served as a sort of de facto capital. Their defeat is telling on a number of levels.