A rectangle has two pairs of equal sides. It has four right angles (90°). The opposite sides are parallel. The diagonals bisect each other. A parallelogram has two pairs of equal sides.

A rectangle has two pairs of equal sides. It has four right angles (90°). The opposite sides are parallel. The diagonals bisect each other. A parallelogram has two pairs of equal sides.

India is building its first HSR corridor at 508 km between Ahmedabad and Mumbai with technical and financial help from Japan ...

With every kilometre of High-Speed Rail providing about five times the capacity of conventional rail, the development of HSR on the Golden Quadrilateral and its diagonals, in all about 10,000 km, may ...