A new approach toward geometrical concept of black hole thermodynamics Seyed Hossein Hendi, Shahram Panahiyan, Behzad Eslam Panah and Mehrab Momennia Eur. Phys. J. C, 75 10 (2015) 507 Published online: 28 October 2015 DOI: 10.1140/epjc/s10052-015-3701-5